As an Amazon Associate I earn from qualifying purchases.
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.

Classic colors for different fashion choose. This thermal underwear for boys set will do its job no matter how active you are. The thermals can be worn as comfy pajamas on cold, ski or snow holidays, pyjamas, hiking, chilly nights.
Suitable or indoor or outdoor wear : perfect for your son during cold winters, school, camping, outdoor trips. Soft and comfortable: offers full mobility and freedom of movement. 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.


The kids thermal sets makes your children without fear of the cold and enjoy happiness of every day. Thermal underwear adopt elegant design to easily meet different daily needs.
Toddler thermals designed use elastic fabric to prevent the corners of the clothes from rolling up or falling. Soft and comfortable: kids thermal sets are unlike traditional cotton long underwear may damage your baby’s skin, we use softer materials to protect your baby’s skin comfort in winter.


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, snowboarding, and if your family enjoys skiing, or ice skating then Rocky makes a great base layer -- but without the sagging and ‘awkward adjustments’.
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.


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.
No more old-school scratchy insulated underwear: traditional cotton long underwear are simply scratchy and uncomfortable to wear for long periods of time, comfy polyester blend so you can enjoy all-day comfort, Rocky thermals are made from a soft, and your winter adventures never have to end.


1. ViCherub
#ad
ViCherub Girl’s Thermal Underwear Set Kids Long Johns Fleece Lined Base Layer Top & Bottom Thermals for Girl Gray Large
#adViCherub #ad - Sweat moisture wicking』: the thin light weight thermals clothing maintains your toddler child body heat and breathable in the extreme cold weather. 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.
More information #ad
Ultra soft and comfortable』: 92% microfiber Polyester + 8% Spandex, durable, lightweight, smooth, bring your youth children warmth like live in Spring. Idea gifts for family/friends』: warmth is the best expression of love in winter, hiking, biking, hunting, ski and camping, whether your girls are running, snowboard, daily wear our girls long underwear thermals at home or under clothes.Brand | ViCherub #ad |
Manufacturer | ViCherub #ad |
Height | 1 Inches |
Length | 6.5 Inches |
Weight | 0.2 Pounds |
Width | 4.8 Inches |
Part Number | 19TUS-Min-G14 |
Model | TUS19G |
More information #ad
2. ViCherub
#ad
ViCherub Thermal Underwear Set for Boys Long Johns Fleece Lined Kids Base Layer Thermals Sets Boy Black
#adViCherub #ad - 1 piece set: the thermal underwear consists of 2 parts, jade, Christmas, Blue, and there are eight colors for you to choose: Black, Navy, Grey, top and pants, Charcoal, Red. Xs s m l xl. Wear-resistant material and shrink resistant.Classic colors for different fashion choose. This thermal underwear for boys set will do its job no matter how active you are. The thermals can be worn as comfy pajamas on cold, ski or snow holidays, pyjamas, hiking, chilly nights.
More information #ad
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. Suitable or indoor or outdoor wear : perfect for your son during cold winters, school, camping, outdoor trips. Soft and comfortable: offers full mobility and freedom of movement. 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.
Brand | ViCherub #ad |
Manufacturer | ViCherub #ad |
Height | 0.5 Inches |
Length | 1.5 Inches |
Width | 1 Inches |
Part Number | B2-B-L |
Model | ViCherub-3 |
More information #ad
3. 32 DEGREES
#ad
32 Degrees Kid's Heat Base Layer Set, Vanilla Snowflake, Kids X-Large
#ad32 DEGREES #ad - This helps regular body temperature. Quick dry - 32° heattm quickly wicks away moisture keeping you dry and comfortable. Includes 1 long-sleeve crew neck tee and 1 elastic waistband legging. Anti-static - utilizing a special anti-static agent 32° HeatTM reduces clinging and discomfort from static electricity.More information #ad
Soft hand feel - a unique blend of yarns 32° HeatTM creates a luxury hand feel. Heat retention - utilizing a special fiber content 32° Heat TM retains body warmth.Brand | 32 DEGREES #ad |
Manufacturer | 32 Degrees #ad |
Height | 0.7 Inches |
Length | 5 Inches |
Weight | 11 ounces |
Width | 5 Inches |
More information #ad
4. American Trends
#ad
Boys' Thermal Underwear Christmas Cuddle Duds Thermal Underwears Toddler Long Johns for Boys Snow Pants Red 90 2T-3T
#adAmerican Trends #ad - These toddler thermals used stretchy materials perfect for girls and boys. Best gift: toddler thermal underwear set is the best expression of your love in winter that keep sold air away from your children delicate body. Material: toddler underwear, made of high quality Cotton and smooth Acrylic fibres, take care of cute kids' delicate skin.The kids thermal sets makes your children without fear of the cold and enjoy happiness of every day. Thermal underwear adopt elegant design to easily meet different daily needs.
More information #ad
Features: for your child's safety, cotton sleep sets should always fit snugly. Loose fitting garment is more likely to catch fire. Base layers: base layer set with soft fabric and lightweight design that suitable for indoor and outdoor winter activities, such as outdoor jogging, indoor party. Toddler thermals designed use elastic fabric to prevent the corners of the clothes from rolling up or falling. Soft and comfortable: kids thermal sets are unlike traditional cotton long underwear may damage your baby’s skin, we use softer materials to protect your baby’s skin comfort in winter.
Brand | American Trends #ad |
More information #ad
5. Cuddl Duds
#ad
Boys Cuddl Duds Navy Blue Comfortech Poly Base Layer Set-- Shirt & Pants Medium 8/10
#adCuddl Duds #ad - Thumbholes for easy layering. Added stretch for enhanced fit and comfort. Tagless / Functional fly. Wicking technology Wicks away moisture and stays dry. 2 piece base layer set: warmth Without Weight Long sleeve crew neck top and long pant.More information #ad
Brand | Cuddl Duds #ad |
More information #ad
6. Rocky
#ad
Medium, Rocky Thermal Underwear for Girls Thermal Long Johns Set Shirt & Pants, Base Layer w/Leggings/Bottoms Ski/Extreme Cold Black
#adRocky #ad - 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.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, snowboarding, and if your family enjoys skiing, or ice skating then Rocky makes a great base layer -- but without the sagging and ‘awkward adjustments’.
More information #ad
No more old-school scratchy insulated underwear: traditional cotton long underwear are simply scratchy and uncomfortable to wear for long periods of time, comfy polyester blend so you can enjoy all-day comfort, Rocky thermals are made from a soft, 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.
Brand | Rocky #ad |
Height | 1.5 Inches |
Length | 10.1 Inches |
Weight | 11 ounces |
Width | 8.2 Inches |
More information #ad
7. Fruit of the Loom
#ad
Fruit of the Loom Boys' Performance Thermals Underwear Set, 8, Blue Cove Heather
#adFruit of the Loom #ad - 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.More information #ad
Brand | Fruit of the Loom #ad |
Manufacturer | Fruit of the Loom #ad |
Part Number | 20818/20883 |
Model | 20818/20883 |
More information #ad
8. Rocky
#ad
Base Layer w/Leggings/Bottoms Ski/Extreme Cold Black, Medium, Rocky Thermal Underwear for Boys Thermal Long Johns Set Shirt & Pants
#adRocky #ad - 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.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.
More information #ad
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’. No more old-school scratchy insulated underwear: traditional cotton long underwear are simply scratchy and uncomfortable to wear for long periods of time, comfy polyester blend so you can enjoy all-day comfort, Rocky thermals are made from a soft, and your winter adventures never have to end.
Brand | Rocky #ad |
Part Number | LYSB01LYSIZZ8-SPRTSEQIP |
Model | LYSB01LYSIZZ8-SPRTSEQIP |
More information #ad
9. Cuddl Duds
#ad
Cuddl Duds Women's Softwear with Stretch Legging, Black, Large
#adCuddl Duds #ad - Comfortable crossover waistband fits below the waistline. Lightweight comfort and warmth without the bulk. Smooth body-hugging fit ideal for layering.More information #ad
Brand | Cuddl Duds #ad |
Manufacturer | Cuddl Duds Women's Sleepwear #ad |
Weight | 0.35 Pounds |
Part Number | LYSB01GSTLZHI-SPRTSEQIP |
Model | CD8618816A |
More information #ad
10. Hanes
#ad
Hanes girls Comfortsoft Long Sleeve Tee T Shirt, Small US, White
#adHanes #ad - Flattering, feminine fit. Fabric: 100% cotton light steel is 90% cotton / 10% polyester. Tag-free for added comfort. Perfect for layering or wearing alone. Available in a variety of colors.More information #ad
Brand | Hanes #ad |
Manufacturer | Hanes Women's Activewear #ad |
Height | 1 Inches |
Length | 13 Inches |
Weight | 0.13 Pounds |
Width | 8 Inches |
Part Number | OK123 |
Model | OK123 |
More information #ad