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Rocky Thermal Underwear for Kids offers a premium base layer solution combining fleece-lined softness with advanced moisture-wicking fabric. Engineered with a stay-put design and durable poly-spandex blend, these thermals ensure all-day warmth and comfort under heavy winter gear, making them a top-rated choice (#3) for boys' thermal underwear sets.

























































| ASIN | B0859L35SR |
| Best Sellers Rank | #843 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #3 in Boys' Thermal Underwear Sets |
| Customer Reviews | 4.5 4.5 out of 5 stars (5,668) |
| Date First Available | March 5, 2020 |
| Department | boys |
| Manufacturer | Rocky |
C**A
Soft and very comfortable
Loved keep the regular temperature of the body, soft texture, nice color and size fits well for my son .
A**L
True to size and nice and warm. Fabric is soft and stretchy.
Fit is accurate to sizing and the product matches the description. Nice and warm too! My son love it!
S**N
So soft and stylish!
These are soft, warm, and stylish. My son loves how incredibly warm and cozy they are!
L**O
Good quality thermals for frigid weather
The thermal underwear are pretty good quality.
N**A
Perfect for mammoth
Super soft and true to size. My 11 year old son got well in the large
K**R
Great thermal base layer.
Very nice quality. Fits true to size. Perfect as a base layer.
J**.
Nice and sore … light weight
Great fit 👍🏾my grand. Perfect
B**V
Functional but pill easily
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
R**.
My son loves these, they are light and breathable, yet warm. The material is exceptional, and so far has not shrank. My child uses these for skating and hockey. We used to layer up with pajama pants, but this is much better. Coincidentally, these can also be used as pajamas. * They are comfortable. * They are breathable. * They do not shrink.
K**E
Ligero y muy suave
B**E
As expected
D**M
Fits great!!
K**O
Does not feel warm, lining gives clammy feel.
Trustpilot
5 days ago
4 days ago