Rocky Thermal Underwear for Kids, Boys Thermals, Long Johns Underwear, Base Layer for Cold Weather/Skiing
Condition: New
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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 7 left in stock, order soon!
Arrives
Friday, Nov 14
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Special Size Type: THERMALS SET
Size: X-Large
Color: Dinosaur Design
Features
- Fleece
- Made in the USA and Imported
- Pull On closure
- Machine Wash
- KEEP WARM (WITHOUT THE SWEATY MESS): Happy Customers say the unique breathable, moisture-wicking fibers on Rocky thermal underwear keeps them warm, without becoming sweat-soaked, so trips to the snow arent ruined by constant uncomfortable sweating and overheating
- 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): Dont 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 boys 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
Department : boys
Date First Available : March 5, 2020
Department : boys
Date First Available : March 5, 2020
Manufacturer : Rocky
Best Sellers Rank: #38,328 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #1 in Boys' Thermal Underwear Sets
#1 in Boys' Thermal Underwear Sets:
Customer Reviews: 4.5 4.5 out of 5 stars 5,582 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Nov 14
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Special Size Type: THERMALS SET
Size: X-Large
Color: Dinosaur Design
Super comfy! Super warm, and fit great. Can by used as long undies or jammies. Adorable and my oldest wishes he could get the dinos in xxl
Reviewed in the United States on July 26, 2025 by BAMF
Special Size Type: THERMALS SET
Size: Medium
Color: Melange Grey
Soft and sensitive friendly. These keep the kiddos warm and are comfortable under snow gear. True to size.
Reviewed in the United States on June 28, 2025 by Amy B
Special Size Type: THERMALS SET
Size: Large
Color: Black
Worked really well for a Florida boy who loves skiing. Kept him warm so that he can enjoy the harsh Colorado winter skiing trip
Reviewed in the United States on July 20, 2025 by Afifa Khaliq
Special Size Type: THERMALS SET
Size: Medium
Color: Black
I bought these for my boys to wear as a base layer for soccer. At their age, I just couldn’t justify name brand base layer, when they grow so rapidly. They were exactly what I needed, though not quite as thick and warm as UA. For the cost, they’re perfect, and now they can wear them through the winter. They did not fit snugly, as I hoped, and in fact, they were baggy. I bought the sizes they normally wear. If you want snug fit (for kids, anyway), buy a size down. Not a big deal, as my kids will grow into them, and if they hold up, they’ll wear them for the opening of spring season.
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Reviewed in the United States on December 23, 2018 by KellieO
Special Size Type: THERMALS SET
Size: Medium
Color: White Plaid
Material is warm, no pilling, wash and color remains no fading. Good value for money. True to size. Would buy more. The material is not too thick.
Reviewed in the United States on March 7, 2025 by Jessica J.
Special Size Type: THERMALS SET
Size: Medium
Color: Skeleton Design (Glow in the Dark)
buying for the second time. It's an ideal skiing inner layer option for kids: reasonable price with amazing quality
Reviewed in the United States on April 18, 2025 by Bernard Fisher
Special Size Type: THERMALS SET
Size: X-Large
Color: Heather Grey
These are the best as far as quality, comfort, fit/sizing! I have bought 6 other brands of base layer sets from target, REI, etc and had to return them all because of poor fit or tiny sizing. I ordered 2 sets each of this brand for my 2 boys (8 yo, size XL, and 3 yo, size XS) and will be ordering more of these to wear under clothes for winter and as PJs. The material is silky smooth on the outer side with a thin, extremely soft fleece fabric on the inner side. Very stretchy, which is perfect for my 8 year old, who is more the size of a 13 year old. My younger son LOVES the car and firetruck prints!
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Reviewed in the United States on December 14, 2023 by monique monique
Special Size Type: THERMALS SET
Size: XX-Small
Color: Skeleton Design (Glow in the Dark)
Functionally these are great. Keep kids warm and are comfy. Quality not great they pilled after 1 wash and have continued to do so with every wash since. Not bad for the price but are already looking pretty shabby
Reviewed in the United States on February 1, 2025 by BelleKV