Best Long Underwear For Kids

Our Top 20 Best Long Underwear For Kids list was created by The Man Post founder, Paul Crouch, to help users find products that are useful, affordable, and available. The list is updated every month.

Best Long Underwear For Kids

Rocky Thermal Underwear for Girls (Thermal Long Johns Set) Shirt & Pants, Base Layer w/Leggings/Bottoms Ski/Extreme Cold (Black - Large)

$29.99  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • NO MORE OLD-SCHOOL SCRATCHY INSULATED UNDERWEAR: Traditional cotton long underwear are simply scratchy and uncomfortable to wear for long periods of time, Rocky thermals are made from a soft, comfy polyester blend so you can enjoy all-day comfort, and your winter adventures never have to end
  • FLEECE-LINED COMFORT (WITHOUT THE BULK): Don’t let the lightweight fabric fool you, thanks to the fleece-lined design, this thermal underwear set gives you high-quality warmth that fans say keep them warmer than traditional puffy thermals or wool base layers that leave you feeling strangled or trapped
  • NO MORE AWKWARD ADJUSTING THANKS TO ELASTIC SEAMS: Check out the pictures and see how this girl’s thermal underwear set is crafted using elastic seems that keep tops and bottoms from falling down or bunching up (even on long walks to school), and if your family enjoys skiing, snowboarding, or ice skating then Rocky makes a great base layer -- but without the sagging and ‘awkward adjustments’
  • MACHINE WASHABLE FOR EASY CLEANUP: While cheap Thermal Underwear unravel in the washing machine after only a few cycles, Rocky uses high-quality stitching for thermal leggings and long sleeve shirts that stand up to the washer -- even with super-active days and many muddy adventures

Rocky Thermal Underwear for Boys (Thermal Long Johns Set) Shirt & Pants, Base Layer w/Leggings/Bottoms Ski/Extreme Cold (Black - Medium)

$29.99  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • NO MORE OLD-SCHOOL SCRATCHY INSULATED UNDERWEAR: Traditional cotton long underwear are simply scratchy and uncomfortable to wear for long periods of time, Rocky thermals are made from a soft, comfy polyester blend so you can enjoy all-day comfort, and your winter adventures never have to end
  • FLEECE-LINED COMFORT (WITHOUT THE BULK): Don’t let the lightweight fabric fool you, thanks to the fleece-lined design, this thermal underwear set gives you high-quality warmth that fans say keep them warmer than traditional puffy thermals or wool base layers that leave you feeling strangled or trapped
  • NO MORE AWKWARD ADJUSTING THANKS TO ELASTIC SEAMS: Check out the pictures and see how this boy’s thermal underwear set is crafted using elastic seems that keep tops and bottoms from falling down or bunching up (even on long walks to school), and if your family enjoys skiing, snowboarding, or ice skating then Rocky makes a great base layer -- but without the sagging and ‘awkward adjustments’
  • MACHINE WASHABLE FOR EASY CLEANUP: While cheap Thermal Underwear unravel in the washing machine after only a few cycles, Rocky uses high-quality stitching for thermal leggings and long sleeve shirts that stand up to the washer -- even with super-active days and many muddy adventures

Fruit of the Loom Boys' Performance Thermals Underwear Set, Blue Cove Heather, 8

$18.99
$14.46
 in stock
2 new from $14.46
Free shipping
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • Thermal long john set includes matching top and bottom
  • Extra soft insulation and warmth
  • Moisture wicking fabric for comfort
  • Quick-dry fabric
  • Stretches for a better performance fit

ViCherub Boys Thermal Underwear Set Fleece Lined Long Johns Kids Top & Bottom Knit Base Layer Winter Warm Sets for Boy Black, X Large

$39.99
$25.99
 in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • 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.

Fruit of the Loom Girls' Premium Thermal Waffle Underwear Set, Black/Fuchsia Cross Dye, 10-12

$15.99
$14.41
 in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • Thermal long underwear set for girls provides insulation and warmth in cold conditions
  • Soft mini waffle fabric long sleeve crew-neck shirt and pant set
  • Moisture wicking and quick drying fabric made from U.S. sourced cotton and recycled polyester
  • Cuffed wrists and ankles keep heat in
  • Tagless collar and waistband

Amazon Essentials Boys' Thermal Long Underwear Set, Black, Medium

$13.00
$10.74
 in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • Our cotton blend thermal set functions as a lightweight base layer to keep you warm
  • Ribbed cuffs and hem
  • Everyday made better: we listen to customer feedback and fine-tune every detail to ensure quality, fit, and comfort

Rocky Thermal Underwear for Girls Cotton Knit Thermals Kids Base Layer Long John Pajamas Set (Black - Medium)

$19.99  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • 2 PIECE SET: This Rocky cotton knit thermal underwear for girls set is designed for comfort with Polyester 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 55% Cotton and 45% Ultra-Soft Polyester, 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 thermal underwear for girls set under your clothing to keep warm and cozy in freezing cold climates or bad weather.

Eddie Bauer Kids Base Layer Thermal Underwear for Boys and Girls, Shirt and Pants Set-Navy-X-Large

$34.99
$22.99
 in stock
2 new from $22.99
Free shipping
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • A MUST-HAVE FOR YOUR KID’S WINTER ACTIVITIES: No matter if you live in a cold-weather city, or if your little adventurer likes any sort of winter activities, this 2-piece base layer set with long pants and top, is the best way to shield them from the cold. Featuring supreme heat-retention properties, the Eddie Bauer winter long johns set ensures that your kid’s body will stay warm and cozy the easy, safe, comfortable way!
  • 4 WAY STRETCH FOR TOTAL FREEDOM OF MOVEMENT: Unlike thick and heavy winter clothes that may limit your kid’s ability to run, play or perform well in any type of winter sports, this 4-way stretch set conforms to your kids’ body and moves with them, for never-ending comfort. With its elastic waistband and a smart thumb-hole design for the thermal top, both pieces will stay securely in place, no matter how active your kid may be!
  • ANTI-STATIC & UNBEATABLY COMFORTABLE: Designed to be extra durable and comfortable, this thermal underwear for kids can be worn underneath any outfit without being too bulky. Along with its anti-static quality, it can easily be paired with any jeans for cold days in the city, sportwear for outdoor practice, or with ski suits without causing the slightest discomfort
  • QUICK DRY PROFESSIONAL LEVEL LAYERING: Made of the best combination of materials [37% acrylic, 34% polyester, 25% rayon, 4% spandex - 120 GSM] this kid’s quick-dry layering set is perfect for snowy, rainy or even super sweaty days after a tiring practice session. Keeping your child dry and warm, this kids thermal underwear set is ideal for young skiers, snowboarders, winter travelers and so much more!
  • EDDIE BAUER – 100 YEARS OF ATHLETIC GEAR INNOVATIONS: Since 1920, Eddie Bauer has been devoted to creating revolutionary athletic gear that helps outdoor enthusiasts achieve their best. With 100 years of expertise that has been globally trusted by world-class athletes, you have every good reason to bring a piece of athletic magic home, this time for your kid!

Just Love Girls Tie Dye Two Piece Thermal Underwear Set 95461-10364-7-8

$14.99  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • KEEP THE KIDS WARM: Just Love’s thermal underwear kids set is made using a non-irritating blend of 60% cotton and 40% polyester that feels great on the skin and keeps the children perfectly warm to brave the chilly weather whether indoors or outdoors.
  • EASY TO LAYER: This girls thermal underwear is designed to make layering a breeze. The well-fitting yet loose cut allows you to easily dress your little ones without much hassle, with the thermal base layer providing comfortable warmth without being too bulky.
  • MADE TO LAST: The long johns for kids combine the comfort of cotton with the durability of polyester to create a garment that will last through numerous chilly moments. The inner thermal wear washes well in the machine without shrinking or running color.
  • COMFORTABLE FIT: We stock these thermals for girls in a wide range of children sizes to beautifully fit your toddler or teen. The thermal bottoms are fitted with an elastic waist band for added comfort and taper down to make them perfect for wearing with winter boots.
  • GREAT VALUE FOR MONEY: Just Love prides itself in giving you the latest styling and superior quality at prices that won’t break the bank. Grab the girls thermals in a choice of lovely color at the best price around. Click ‘Add to Cart’ now!

ViCherub Girl’s Thermal Underwear Set Kids Long Johns Fleece Lined Base Layer Top & Bottom Thermals for Girl Black Medium

$24.99  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • 『Ultra Soft and Comfortable』: 92% Microfiber (Polyester) + 8% Spandex, smooth, lightweight, durable, bring your youth children warmth like live in Spring.
  • 『Fleece Lined Keep Warm』: Girl long underwear thermals knit sets with Fleece Lining in nice thickness, gives your kids warmth for indoor outdoor activities.
  • 『Comfy Skin Stretch』: Four Way stretch materials with an elastic waistband, this base layer silk long john set perfectly fits body curves, keeps cozy in winter.
  • 『Sweat Moisture Wicking』: The thin light weight thermals clothing maintains your toddler child body heat and breathable in the extreme cold weather.
  • 『Idea Gifts for Family/Friends』: Warmth is the best expression of love in winter, whether your girls are running, hiking, biking, hunting, snowboard, ski and camping, daily wear our girls long underwear thermals at home or under clothes.

Arctic Hero Boys' Thermal Underwear - 2 Piece Waffle Knit Top and Long John Set (8-18), Size 8/10, Grey/Royal

$13.95  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • HIGH QUALITY: Our thermal underwear set for toddler and older boys includes a long-sleeve t-shirt and a pair of matching sweatpants; Extra warm waffle-knit underwear set for your son, perfect for layering, bedtime, sleepovers, and relaxing; Ideal for staying cozy on winter days
  • THERMAL TEE: Extra warm and snug boys' long-sleeve thermal t-shirt ensures maximum comfort; This soft waffle top will keep your toddler or little boy comfortable on the coldest winter nights; Skin-friendly and warm fabric makes this sleeping top a must-have item in your son's wardrobe
  • MATCHING SWEATPANTS: Lounge or snooze in these soft thermal sleepwear joggers made from skin-friendly fabric and topped with an elastic waistband that will keep him comfortable and won't restrict his movement; Extra warm waffle-knit long johns for boys are perfect as a base layer in the autumn and winter
  • WAFFLE KNIT PAJAMA SET: A complete sleepwear set for boys that retains warmth to keep your little one snug and comfy; This thermal 2-piece underwear set will quickly become your son's favorite bedtime outfit; Buy several different sets and stretch out his collection with these extra warm outfits
  • EASY CARE: Machine wash; Tumble Dry; Please see the product description for additional detail

Kids Heat Baselayer Set, Black, Small

$20.95
$14.98
 in stock
12 new from $13.99
Free shipping
Amazon.com
as of June 8, 2022 2:04 pm

Features

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

ViCherub Boys Thermal Underwear Set Fleece Lined Long Johns Kids Top & Bottom Knit Base Layer Winter Warm 2 Sets for Boy

$59.99
$40.99
 in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • 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.
  • 2 Piece Set:The thermal underwear consists of 2 parts,top and pants,and there are eight colors for you to choose: Black & Grey, Black & Black, Black & Charcoal (XS S M L XL). Classic colors for different fashion choose.

Bodtek Girls Thermal Long Underwear Set Fleece-Lined Long Johns for Pajamas or Cold Weather Base Layer with Elastic Waistband Breathable, Soft, Moisture-Wicking Leggings & Shirt (Black, X-Large)

$24.99
$22.99
 in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • Shivering to Smiling: Keep your girl cozy with Bodteks thermal long underwear set! Perfect for pajamas or a base layer, your fleece-lined underwear traps warmth for temperature-defying toastiness.
  • Oh-So-Comfy: Snuggle in the softest thermal underwear! Your girls thermals are incredibly comfortable thanks to their tagless design, friction-less seams, and soft polyester-and-spandex material.
  • No-Sweat Snugness: Keep comfy, not clammy, with your kids long johns. Lightweight, breathable, and moisture-wicking, your girls thermal set holds heat AND allows air flow, fighting the sweat stink.
  • Doubly Loved Long Johns: Discover long underwear that delights kids and parents alike! 4-way stretching, machine-washable fabric lets your girl romp without restriction and makes cleaning a cinch.
  • Just My Style: Show off your fit! Select your size (XS, S, M, L, or XL) then choose between 4 colors (black, gray, white, red and olive green) to wear girl pajamas that parade your unique personality.

Boys Thermal Long Underwear Set Fleece-Lined Long Johns for Pajamas or Cold Weather Base Layer with Elastic Waistband Breathable, Soft, Moisture-Wicking Leggings & Shirt by Bodtek (Black, Large)

$25.99
$24.49
 in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • Shivering to Smiling “ Keep your boy cozy with Bodteks thermal long underwear set! Perfect for pajamas or a base layer, your fleece-lined underwear traps warmth for temperature-defying toastiness.
  • Oh-So-Comfy “ Snuggle in the softest thermal underwear! Your boys thermals are incredibly comfortable thanks to their tagless design, friction-less seams, and soft polyester-and-spandex material.
  • No-Sweat Snugness “ Keep comfy, not clammy, with your kids long johns. Lightweight, breathable, and moisture-wicking, your boys thermal set holds heat AND allows air flow, fighting the sweat stink.
  • Doubly Loved Long Johns “ Discover long underwear that delights kids and parents alike! 4-way stretching, machine-washable fabric lets your boy romp without restriction and makes cleaning a cinch.
  • Just My Style “ Show off your ˜fit! Select your size (XS, S, M, L, or XL) then choose between 4 colors (black, gray, white, and royal blue) to wear boy pajamas that parade your unique personality.

adidas Kids-Boy's Performance Long Boxer Briefs Underwear (4-Pack), Onix Grey/Grey/Scarlet Red, Large

$22.19
$19.77
 in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • All-purpose, do-anything underwear.
  • Soft, stretchy, quick-drying material.
  • Plus-soft tagless waistband and super smooth stitching.
  • No-ride-up construction.
  • Long boxer brief, leg extends below the mid-thigh.

Boys Long John Ultra-Soft Cotton Stretch Base Layer Underwear Sets / 3 Long Sleeve Tops + 3 Long Pants - 6 Piece Mix & Match (3 Sets / 6 Pc - Evergreen/Blue/Arctic, 16/18)

$34.99  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • 3 LONG UNDERWEAR SETS / 6 PIECE BASE LAYER UNDERWEAR TOP & BOTTOM SETS SAVER PACK ; 6 Piece Mix & Match Natural Breathing Soft Cotton Fabric with a Touch of Flexible Spandex
  • ANYWEAR / ANY SEASON FABRIC & COMFORT; Smooth Light Weight Cotton Slim Fitting with Stretch / Great Under Clothing Layer with No Thick Bulge / Long Underwear Provides Second Layer In Cold Weather & Great Wear Alone in Mild Temps
  • GREAT FIT & COMFORT : Long Sleeve Crew w Adjustable Spandex Wrist / Long John Pant w Spandex Rib Anklet Hem Stay in place Openings
  • GREAT CONSTRUCTION; Cotton Covered Spandex Elastic Non Rolling Stay in Place Waist Band / Tag Free Smooth Care Labels for Comfort
  • EASY CARE ; Machine Wash / Tumble Dry - BRILLIANT COLORS -Wash After Wash

Fruit of the Loom Boys' Big Waffle Thermal Underwear Set, Black Soot, 7-8

$16.17  in stock
3 new from $16.17
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • Warm waffle thermal set for boys
  • Soft poly/cotton blend
  • Wicks away moisture
  • Retains heat and dries fast
  • Tagless collar and waistband

DEVOPS Boys and Girls Thermal Underwear Long Johns Set with Fleece Lined (Small, Black)

$19.59  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • 【Micro Fleece Lined】 90% Polyester, 10% Spandex.
  • 【Ultra Soft & Warm】 Thermal tech fleece fabric of the baselayer caresses the skin so naturally providing maximum comfort and softness.
  • 【Stretchy & Durable】 Spandex added for extra stretch and shape retention; close-fitting style does better in retaining body heat to keep you warm.
  • 【Versatile Performance】 Thermal Underwear for Kids with ultra soft hand feel and heat-retention is a perfect option during various indoor activities, outdoor excursion and recreational activities.
  • 【Top & Bottom SET】 2 Piece thermal set they are ultra soft, warm, comfortable and great to wear at home or add an extra layer of warmth under your clothes.

B.U.M. Equipment Boys’ Underwear – 4 Pack Long Leg Athletic Compression Boxer Briefs (Size: 8-18), Size 16/18, Black/Blue/Black/White Multi

$17.99  in stock
Amazon.com
as of June 8, 2022 2:04 pm

Features

  • OFFICIALLY LICENSED B.U.M. EQUIPMENT: Boys’ Long Leg Performance Boxer Briefs; Modernizing the styling for the needs of today’s customer and combining that with the legendary heritage feeling, B.U.M. remains committed to its roots
  • MOISTURE WICKING: Boys' long leg athletic performance boxer briefs wick moisture to keep you dry during intense workouts, practices, and games; Boys’ compression shorts boxer briefs are ideal for soccer, football, baseball, lacrosse, hockey, basketball, and running
  • PERFORMANCE STRETCH: Quick dry athletic boxer briefs underwear for boys' have a stay put design and a longer leg so they won't ride up; Stretch fabric offers a full range of motion for peak performance
  • CONTOUR POUCH: Performance boxer briefs with a contour pouch designed for added support; He’ll be able to take his performance to the next level in these compression underwear and comfortably keep everything in place and help prevent chafing
  • MULTIPACK VALUE: For one great price, your boy will get 4 pairs of high quality microfiber performance boxer briefs underwear

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