9 best kids base layer

Kids' base layers refer to a type of clothing worn close to the skin, designed to provide thermal insulation and moisture-wicking properties. These garments are related to thermal underwear, underwear, clothing, and fall under the category of boys' clothing, shoes, and jewelry.

Features of Kids' Base Layers:

  1. Thermal Insulation: Base layers are typically made from materials like merino wool, polyester, or blends of fabrics designed to trap body heat. They provide an extra layer of warmth, making them ideal for cold weather activities.

  2. Moisture-Wicking: One of the key features of base layers is their ability to wick away moisture from the skin.They keep the body dry by pulling sweat away from the skin, making them suitable for outdoor activities and sports.

  3. Breathability: Despite providing insulation, good base layers are breathable, allowing air circulation. This feature prevents overheating and ensures comfort during various physical activities.

  4. Compression: Some base layers are designed with a compression fit, providing support to muscles. This can be particularly beneficial for sports and activities where muscle support is necessary.

  5. Flatlock Seams: Quality base layers often have flatlock seams, which prevent chafing and irritation on the skin, especially during prolonged wear or physical activities.

  6. Versatility: Base layers are versatile and can be worn not only as thermal underwear but also as standalone shirts or leggings for various activities, such as hiking, skiing, or camping.

  7. Durable and Quick Drying: They are designed to be durable, and many of them dry quickly after washing, making them convenient for active children and parents alike.

Boys' Clothing, Shoes, and Jewelry:

In the realm of boys' clothing, base layers are essential items, especially in colder climates. They provide a foundation for dressing in layers, allowing kids to stay warm without the bulk of heavy clothing. Base layers are often worn under regular clothing during winter months or as standalone outfits during outdoor adventures.

These garments fall under the broader category of clothing, and they are especially crucial in the boys' section due to the active lifestyles many boys lead. Whether worn for sports, outdoor play, or simply to stay warm during chilly days, kids' base layers are an integral part of their wardrobe.

Overall, kids' base layers offer practical and functional solutions for parents looking to keep their children warm, dry, and comfortable during various activities and in different weather conditions.

Below you can find our editor's choice of the best kids base layer on the market
  

Rocky Thermal Underwear for Boys Fleece Lined Thermals Kids Base Layer Long John Set

Based on 2 reviews Check latest price
  • 2 PIECE SET: This Rocky thermal underwear for boys set is designed for comfort with an elastic waistband and fleece lined moisture wicking microfibers. These boy's thermal underwear are stretchy comfortable.
  • WONDERFULLY WARM: Rocky's thermal underwear for kids is perfect for use underneath formal or casual attire at work or for a day out, or the thermal underwear can be worn as comfy pajamas on cold, chilly nights.
  • PREMIUM GRADE FABRICS: Rocky thermal underwear for boys is made from 92% Ultra-Soft Polyester and 8% Spandex, these thermal long johns have the perfect blend of comfort, warmth, elasticity, and moisture protection.
  • MOISTURE WICKING: Designed to keep you dry, this long-sleeved shirt and long pants are made to be wick away sweat and other moisture, this thermal underwear for boys set will do its job no matter how active you are.
  • BASE LAYERS: When going out to jog, run, bike or cycle in the cold, make sure to use the rocky thermal underwear for boys set under your clothing to keep warm and cozy in freezing cold climates or bad weather.

User questions & answers

Question: I have a husky boy of 11, about 4'11" and 119 lbs. will the xl work for him? or will it be too tight
Answer: The items are mainly made of polyester, windproof and not waterproof.
Question: What size would a 5 1/2 year old wear
Answer: If it were me, I would order the bigger size. They are narrow and long. They did a nice job of keeping my 3 year-old's hands warm last winter.
Question: Are these elastic at the wrists and ankles
Answer: From the bottom of the strap (closest to the wrist) to the top it is approximately 6 inches.
Question: Is the size medium for a small child or is it medium
Answer: I'd say 1-2. I ordered 1-2 for my 25 month old and they fit really well with room to spare. I'd guess he'll be able to wear them again next year.

Product features

Keep Them Warm And Toasty

They are silky on the outside but lined with soft thermal fleece on the inside. They fit snug enough that there is no bulkiness showing when worn under clothes.They are also wonderful to sleep in. These sets will continue warming you even after being laundered many times.

These Rocky Fleece Lined Thermals are well designed for wear under your clothes OR alone.

The waist of the pants are elastic for a comfortable snug fit. These light-weight thermal pants make all the difference in the world.

Fun in the Snow!
Winter Pajamas
Chilly Weathers

Rocky Thermal Underwear for Girls Fleece Lined Thermals Kids Base Layer Long John Set

Based on 2 reviews Check latest price
  • 92% Polyester, 8% Spandex
  • 2 PIECE SET: This Rocky thermal underwear for girls set is designed for comfort with an elastic waistband and fleece lined moisture wicking microfibers. These girl's thermal underwear are stretchy comfortable.
  • WONDERFULLY WARM: Rocky's thermal underwear for kids is perfect for use underneath formal or casual attire at work or for a day out, or the thermal underwear can be worn as comfy pajamas on cold, chilly nights.
  • PREMIUM GRADE FABRICS: Rocky thermal underwear for girls is made from 92% Ultra-Soft Polyester and 8% Spandex, these thermal long johns have the perfect blend of comfort, warmth, elasticity, and moisture protection.
  • MOISTURE WICKING: Designed to keep you dry, this long-sleeved shirt and long pants are made to be wick away sweat and other moisture, this thermal underwear for girls set will do its job no matter how active you are.
  • BASE LAYERS: When going out to jog, run, bike or cycle in the cold, make sure to use the rocky girs thermal underwear set for under your clothing to keep warm and cozy in freezing cold climates or bad weather.

User questions & answers

Question: Would these work for under my daughter's Halloween costume? Would she need to wear a jacket too or would these keep her warm enough
Answer: My son is the same size and the XL was good
Question: Are the Christmas ones navy or black
Answer: I would say a size Small. However, it also depends on the child if the child is tall or slim etc.
Question: where is this made and is it treated with flame retardants? I don't see a definitive answer on this
Answer: No, just regular stitching.
Question: The sizes are not clear whether these are for big or small girls. My daughter wears a size girls 6x or 7/8 for growth.She is 6. What do you recommend
Answer: fits an avg size 4th grade child about 55 lbs

Product features

Girl's Fleece Lined Thermal Underwear Set
Keep Them Warm and Toasty!

They are silky on the outside but lined with soft thermal fleece on the inside. They fit snug enough that there is no bulkiness showing when worn under clothes.They are also wonderful to sleep in. These sets will continue warming you even after being laundered many times.

These Rocky Fleece Lined Thermals are well designed for wear under your clothes OR alone.

The waist of the pants are elastic for a comfortable snug fit. These light-weight thermal pants make all the difference in the world.

Great for layering
Winter Sleepwear
Fun in the Snow!

32 DEGREES Kid's Heat Base Layer Set

32 Degrees

Based on 844 reviews Check latest price

Product description

Set includes 2 items: 1 long sleeved crew neck tee shirt, 1 elastic waistband legging.

  • 32 Degrees Weatherproof Kids Base Layer Thermal Shirt Long Underwear Set, Black [Small: 6/7]

User questions & answers

Question: My daughter is 2 yrs old what size is best for her
Answer: I purchased 3 sets of these last year for my kids to wear under their Halloween costumes. They worked great..fleece inside so nice an warm. We live in Michigan,so it was about 52 degrees on Halloween night..I would say if its under 50 degrees depending on their costumes..they may need a jacket too...
Question: Are these tagless
Answer: I ordered a coral color
Question: In reading the reviews these seem to be soft to the touch. Is this correct? My son will not wear if they feel tight and itchy like ones found at Walma
Answer: Made in China
Question: are they pretty true to size
Answer: Big girls... my wife wears XL and just told me get 3 more... totaling 6. She wears them every day in the winter, and skin tight (she is 4'9 and 90ish pounds). She loves the different colors.

ViCherub Thermal Underwear Set for Boys Long Johns Fleece Lined Kids Base Layer Thermals Sets Boy

ViCherub

Based on 1 reviews Check latest price
  • Easy Care: Machine Washable, Dry quickly, Repeatedly washed without shrinking, No fading with the highest grade color fastness, Non-irritating. No Laddering. Perfect for men, teen, boy.
  • Perfect Gift for Family & Friends: Warmth is the best expression of love in the cold winter, Our thermal set is your first gift choice for Christmas, New Year, birthday, holiday Valentine's Day.
  • Premium Grade Fabrics: 92% ultra-soft polyester and 8% spandex, This boys thermal underwear base layer gives protection against the cold winter days whilst remaining discreet and comfortable..The boy long johns can still comfortable,warm and color-fast after many washes.
  • Good Moisture Absorption and Sweat Elimination: When your little ones sweat, this thermals base layer can wick moisture away from his skin, and dry quickly and insulating from the cold.
  • Suitable or Indoor or Outdoor Wear : Perfect for your son during cold winters, school, ski or snow holidays, camping, pyjamas, hiking, outdoor trips. The thermals can be worn as comfy pajamas on cold, chilly nights.
  • Soft and Comfortable: Offers full mobility and freedom of movement. Wear-resistant material and shrink resistant. This thermal underwear for boys set will do its job no matter how active you are.
  • 1 PIECE SET: The thermal underwear consists of 2 parts,top and pants,and there are eight colors for you to choose: Black, Grey, Blue, Charcoal, Christmas, Jade, Navy, Red.(XS S M L XL). Classic colors for different fashion choose.

User questions & answers

Question: What sizes for teo boys 5 & 10? waist 30,hip39,insean16/waist 24 hip29,inseam
Answer: My son is the same size and the XL was good
Question: My son is 19 but very very skinny. he is about 5'7" ~104 lbs. which size should i buy for him? thanks
Answer: I would say a size Small. However, it also depends on the child if the child is tall or slim etc.
Question: Are these breathable enough for use in winter outdoor activities
Answer: No, just regular stitching.
Question: Are they best to be worn under clothes or worn as the clothes
Answer: fits an avg size 4th grade child about 55 lbs

Product features

These ViCherub Fleece Lined Thermals are well designed for wear under your clothes OR alone.

These long underwear are silky on the outside but lined with soft thermal fleece on the inside, provides a lightweight layer that feels soft under the skin, They are fit snug enough that there is no bulkiness showing when worn under clothes-even underneath jeans without disrupting your style.

ViCherub Boy's Thermal Underwear

Our Boys thermal underwear sets very soft, comfortable, and fit well.They don't look bulky under clothes.Provides excellent thermal in cold weather.Use the best quality fabrics, even if washed a lot of times, still very warm.

Comfortable experience

Our long johns is made of super fine fiber (polyester)+ spandex, which is very soft and comfortable.

Skin Stretchy

4 Way stretch material and elastic waistband designed.Perfectly fits your body curves.

Sweat Moisture Wicking Design

These girls thermal underwear use designed for smooth knit moisture wicking microfibers,take away moisture to keep her dry and comfortable

Winter outdoors

Unique fabric design, is very light. Let you enjoy activities in indoor and outdoor, enjoy the beautiful winter.

Ultra Soft & Comfy

Made from 92% ultra-soft polyester, and 8% spandex, these have the perfect blend of comfort, warmth, elasticity, and moisture protection.

Fleece Lining Keep Warm

Winter base layer is made of specially developed micro fleece fabrics. Thermal fleece materials provide enhanced warmth and thermal insulation.

Quick Drying

Fabric wicks away and quickly dries moisture in a moment so that the fabric remains dry.

No fading

Repeatedly washed without shrinking, No fading with the highest grade color fastness

ViCherub Thermal Underwear Set for Boys Long Johns Fleece Lined Kids Base Layer Thermals 2 Sets Boy

ViCherub

Based on 791 reviews Check latest price
  • PREMIUM GRADE FABRICS:92% ultra-soft polyester and 8% spandex, This boys thermal underwear base layer gives protection against the cold winter days whilst remaining discreet and comfortable..Still comfortable,warm and color-fast after many washes.
  • GOOD MOISTURE ABSORPTION AND SWEAT ELIMINATION:When your little ones sweat,it can wick moisture away from his skin, and dry quickly and insulating from the cold.
  • SUITABLE FOR INDOOR OR OUTDOOR WEAR:Perfect for your son during those cold winters, school, ski or snow holidays, camping, pyjamas, hiking, outdoor trips.
  • SOFT AND COMFORTABLE:Offers full mobility and freedom of movement.Wear-resistant material and shrink resistant.
  • 2 PIECE SET:The thermal underwear consists of two parts,top and pants,and there are two colors for you to choose,Black & Grey

User questions & answers

Question: Can you wear these as pajamas
Answer: Depends on if she is average I guess. My children are very tall so I ordered a size up and that fit them well. These are very thin material though so keep that in mind as you order. Other than that they fit well and I would guess they are about accurate if you have an average kiddo!
Question: Is the elastic stiched in so it won't bunch or roll
Answer: No, they're not completely tagless. The logo is printed/tagless.
Question: is the XS fits toddlers
Answer: They are soft and will keep your son warm and dry in winter. However if you don't want them to be tight then I suggest getting a size bigger. But also keep in mind that if they are to be warn under his regular clothes you don't want them to be too big either. My son doesn't like tight clothes either and he didn't mind these since they were soft and kept him dry and warm. Hope this helps
Question: Does these thermals keep you warm in winter
Answer: Yes very true to size but not warm.

Product features

These ViCherub Fleece Lined Thermals are well designed for wear under your clothes OR alone.

These long underwear are silky on the outside but lined with soft thermal fleece on the inside, provides a lightweight layer that feels soft under the skin, They are fit snug enough that there is no bulkiness showing when worn under clothes-even underneath jeans without disrupting your style.

ViCherub Boy's Thermal Underwear

Our Boys thermal underwear sets very soft, comfortable, and fit well.They don't look bulky under clothes.Provides excellent thermal in cold weather.Use the best quality fabrics, even if washed a lot of times, still very warm.

Comfortable experience

Our long johns is made of super fine fiber (polyester)+ spandex, which is very soft and comfortable.

Skin Stretchy

4 Way stretch material and elastic waistband designed.Perfectly fits your body curves.

Sweat Moisture Wicking Design

These girls thermal underwear use designed for smooth knit moisture wicking microfibers,take away moisture to keep her dry and comfortable

Winter outdoors

Unique fabric design, is very light. Let you enjoy activities in indoor and outdoor, enjoy the beautiful winter.

Ultra Soft & Comfy

Made from 92% ultra-soft polyester, and 8% spandex, these have the perfect blend of comfort, warmth, elasticity, and moisture protection.

Fleece Lining Keep Warm

Winter base layer is made of specially developed micro fleece fabrics. Thermal fleece materials provide enhanced warmth and thermal insulation.

Quick Drying

Fabric wicks away and quickly dries moisture in a moment so that the fabric remains dry.

No fading

Repeatedly washed without shrinking, No fading with the highest grade color fastness

TSLA Kid's & Boy's and Girl's Thermal Underwear Set, Soft Fleece Lined Long Johns, Winter Base Layer Top & Bottom

Tesla Gears

Based on 581 reviews Check latest price
  • *Alert: Please follow the size examples below*
  • (Ex: Size "Small" 4'3" 60 lbs. *** Updated size guide based on customer's comments***
  • (Ex: Size "Medium" 4'7" 77 lbs. *** Updated size guide based on customer's comments***
  • (Ex: Size "Large" 5'4" 121 lbs. *** Updated size guide based on customer's comments***
  • 2 PIECE Set Micro-Fleece Lined (Top & Bottom).
  • Excellent mobility and moisture wicking. Heatfit design
  • Four-way stretch for unrestricted movement.
  • 90% Ultra Soft Microfiber, 10% Spandex.

User questions & answers

Question: What size should I get for my grandson who wears a size 12 slim
Answer: Yes, absolutely. They are comfortable and will keep them warm.
Question: Can you put iron on fabric on this material
Answer: Yes,these elastic stiching are so good.
Question: Measurements: weight 55 lbs, height 4'2", waist 23", chest 24.5", inseam 22" What is the size recommendation for these in between measurements
Answer: XS is same as size 4/5 which would fit about a 4 y/o.
Question: would i get exlarge for a boy
Answer: Yes, this thermal underwear will keep you warm in cold winter. Winter base layer is made of specially developed micro fleece fabrics. Thermal fleece materials provide enhanced warmth and thermal insulation.

BALEAF Youth Boys' Compression Thermal Shirt Fleece Baselayer Long Sleeve Mock Top

Baleaf

Based on 1 reviews Check latest price
  • 92% Polyester, 8% Spandex
  • Pull On closure
  • Stretchy thermal fabric with brushed liner for warmth and snugness
  • Mock neck design helps protect against winter chill
  • Fit type: fitted [a slimmer, more athletic cut]
  • Smooth, chafe-free flatlock seam construction
  • Perfect for soccer, baseball, lacrosse, snowboarding and other activities in winter; Size Chart: Youth Small=US Size 7-8 / Youth Medium=US Size 10-12 / Youth Large=US Size 14-16 / Youth X-Large=US Size 18-20

User questions & answers

Question: Is this shirt 100% cotton
Answer: They are true to size and if he is slim definitely do not go a size bigger.
Question: What size is Xs ? I have 5 year old that needs something for soccer. She’s like a 5/6 in size
Answer: No need to iron would be my answer.
Question: Do these fit true to size
Answer: I would suggest size small.
Question: My son is 42” and 36 pounds. Any size suggestions
Answer: Not sure, my son is not that size.

Product features

FEATURES

  • FABRIC: 92% Polyester 8% Spandex
  • INNER FLEECE LINNING: Soft inner layer keeps you warm & comfortable.
  • FIT TYPE: Fitted a slimmer, more athletic cut.
  • REFLECTIVE LOGO: Provides a greater visibility for low-light runs.
  • HIGH ELASTICITY: 4-way stretch construction moves better in every direction,easy movement and non-restrictive comfort.
  • OCCASION: Perfect for boys and girls in home lounge, exercising, basketball, soccer, football, running, kickboxing, skiing, ice skating, hockey, karate, snowboarding and so on.

BRUSHED FABRIC

Stretchy thermal fabric with brushed liner for warmth.

FLATLOCK SEAMS

Smooth, chafe-free flatlock seam construction

MOCK NECK

Mock neck design helps protect against winter chill.

WHAT SIZE DO THEY CHOOSE

My son is a tall slender ten year old. I got him the medium (10-12) and it’s perfect.-Ronda(size Large)

It is a very snug fit, and he is quite slender (70 pounds). If your child is more average build, probably would order up a size.- J. Louise(size Medium)

Bought sz L for my 11 year old daughter to wear under her soccer jersey (height 4'10, weight 84 lbs). She liked the quality and fit -Laura McClelland(size Large)

She’s 9 years old, size 12 in girls. It fit her perfectly and kept her warm during her game.-Monique(size Medium)

Running
Football
Baseball
Skiing

Burton Kids' Lightweight Baselayer Set

Burton Snowboards

Based on 12 reviews Check latest price

Product description

Matching top and bottom base layers are paired up in a convenient, all-in-one package with the kids' Burton Lightweight Base Layer Set. Designed to stretch, breathe, and dry quick, this technical head-to-toe combo keeps kids warm and dry whether they're on the mountain or just on the couch. Softlock seams and anti-pilling properties mean long-lasting chafe-free comfort, while stretch performance gives junior double jointed dexterity without bunching or untucking.

  • Imported
  • Regular fit is just right: Not too tight or too baggy
  • DRYRIDE Ultrawick fabric is highly breathable; Two-way stretch fabrication for mobility
  • Set includes a top and bottom; Thumbhole cuffs on the top lock sleeves in place
  • Anti-pilling for long-lasting softness; Softlock seams eliminate overlapping fabric for comfort
  • Sustainable odor control provides durable freshness by eliminating body odor, environmental odors, and accumulated fabric odors without limiting breathability; Lifetime warranty

User questions & answers

Question: what would a medium size for girls range be for base layers
Answer: My son is 4’10 86lbs and wears a medium

Product features

Burton Kids' First Layer Set

Matching top and bottom base layers are paired up in a convenient, all-in-one package with the kids' Burton Lightweight Base Layer Set. Stretch, breathable, and quick-drying, this technical head-to-toe combo keeps boys and girls warm and dry whether they're on the mountain or just on the couch. Softlock seams and anti-pilling properties mean long-lasting chafe-free comfort, and stretch performance gives junior double-jointed dexterity without bunching or un-tucking.

Who We Are

Everything we do at Burton started in the mountains. From getting the most out of every journey to chasing snow around the globe, we’ve charged ahead to innovate and change the way people enjoy the outdoors since day one. After driving innovation and progress for over 40 years, Burton knows it’s all about the journey. The product, community, and culture speak for itself. The rest? Well, you just have to drop in and feel the difference.

2 Pack: Boys Thermal Underwear Set Fleece Lined Long Johns Kids Top & Bottom Knit Base Layer Winter Sets

Based on 123 reviews Check latest price

Product description

Our 2 Pack: Boys Girls Youth Kids Microfiber Fleece Lined Top Bottom Thermal Sets are the perfect winter staple for your kids closet. Practical layering for the cold season, and to keep your loved ones warm. 

-This Boys Girls Youth Kids fleece lined thermal set provide an extra layer of insulation for all cold weather activities such as: skiing, snowboarding, sledding, skating, hockey, snow activities, cold outdoor activities, cold weather sports, and more. 

-We have designed a thermal set that fits perfectly underneath clothing without adding extra bulk to your outfit. 

-The thermal pants features a flat elastic band for easy pull-up, and making it convenient to layer underneath pants. This thermal set offers a warm soft to touch fleece lined top and bottom for the highest level of comfort. 

-Offering the best value with our 4-piece set, and the most ideal thermal set to bring to all winter activities! Click Add to Cart Now! –  



Colors:  

Set 1: Black & Black 

Set 2: Black & Hunter Green 

Set 3: Navy & Burgundy 

Set 4: Black & Grey Camo 

Set 5: Charcoal & Green Camo 

 

  • 4 Pieces: Includes 2 Long Sleeve Tops and 2 Long John Bottoms Included
  • Recommend ordering one size up for the best comfort fit.
  • The perfect base layer for all winter/cold weather activities, going out for a run, biking, skiing, snowboarding, ice skating, hockey, and overall a great cold weather apparel addition to your kids closet.
  • Moisture-wicking design keeps your kids dry, and helps absorb sweat and moisture during all and any strenuous activities.
  • Multi-purpose loungewear, active wear, pajamas, base layer, basics, and constructed for supreme warmth and comfort.

User questions & answers

Question: Size chart for a boy 7 yr old
Answer: It'll be based on measurements. A medium converts to numeric size 26(12); chest 28-30, natural waist 25-26 for average weight range of 70-90 lbs and average height of 59-64 inches. You can find the size chart on Burton.com or on our website https://www.evo.com/long-underwear-sets/burton-lightweight-base-layer-set-kids#image=174799/735988/burton-lightweight-base-layer-set-kids-.jpg then click the size chart link.
Question: What size is a medium
Answer: No. It’s polyester/spandex.
Question: Is there a size chart
Answer: The XS should fit. That’s what I bought las t ur for my 7 yr old. He is small and was still wearing 6’s. They are warm and fit snug. Perfect for soccer.
Question: What age group will the small size fit
Answer: It fits true to size. I had to get another set for my 7-year old as he wears it 24/7. Really comfy according to him.

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