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.
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From the brand
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At Rocky, our goal is simple: to bring fashion and comfort within everyone's reach. We believe that you should look and feel amazing every single day. We're on a mission to make our quality, durable clothing affordable for all. Every piece is crafted with your ultimate comfort in mind.
We’ve got you covered whether you’re relaxing at home, in the gym, or on the go.
Discover the Rocky difference. You deserve the best!
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Thermal Sets
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Kids Thermal Sets
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Thermal Pet Collection
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Rocky Leggings Collection
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Mens Boxers Collection
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Kids Onesie Collection
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Men's Socks
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Women's Socks
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Thermal Tops & Bottoms
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Kids Thermal Tops & Bottoms
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Thermal Christmas Collection
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Kids Christmas Collection
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Jumpsuits Christmas Collection
Product Description
Lightweight, yet warm; thin, yet luxuriously soft.
When the snowball fight is on, your little munchkin needs all the cold weather protection they can get. Whether they’re building the perfect Frosty, skiing or bundling up during a snowstorm, our thermal underwear is the perfect way to keep them warm and active.
ROCKY EFFORTLESSLY LOCKS HEAT TO BRAVE THE ELEMENTS WITHOUT FEELING BOGGED DOWN.
When winter strikes, you’ll be wishing you had a pair of Rocky thermal underwear. Made with just the right blend of poly-spandex, they’re the perfect balance between stretch and no-ride staying power. With ultra-light construction and cutting edge heat retention, enjoy cloud-like comfort all day.
Elastic Waistband
Quick-Draw Fly
Premium Stitching
Moisture Wicking Fibers
Rocky Product Recommendations...
 Boy's Thermal Tops |  Boy's Thermal Bottoms |  Boy's Cotton Underwear |  Boy's Striped Tube Socks |  Fleece Onesie - Jumpsuit |  Women's Thermal Underwear |  Men's Thermal Underwear | |
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Customer Reviews
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101
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69
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1,442
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61
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457
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32
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15,463
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Price
| $9.99 | — | $14.99 | — | $19.99 | — | $23.49 |
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Gender
| Boy's | Boy's | Boy's | Boy's | Unisex | Women's | Men's |
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Size
| XX-Small - X-Large | XX-Small - X-Large | XX-Small - X-Large | 9-11 | XX-Small - X-Large | X-Small - 3X-Large | Small - 6X-Large |
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Color
| 24 Colors/Patterns | 24 Colors/Patterns | 8 Colors | 3 Colors/Patterns | 9 Colors | 21 Colors/Patterns | 18 Colors/Patterns |
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Warm Without The Bulk
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
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Breathable Fabric
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Rocky Product Recommendations...
 Pet Thermals |  Girl's Thermal Underwear |  Men's Boxer Briefs |  Men's Boxer Briefs Cotton |  Men's Zip-up Pullover |  Men's Solid Tube Socks |  Women's Leggings | |
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Customer Reviews
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66
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5,460
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2,013
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619
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39
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924
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91
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Price
| — | — | — | — | $17.99 | $19.99 | $17.99 |
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Gender
| Pets | Girl's | Men's | Men's | Men's | Men's | Women's |
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Size
| XX-Small - X-Large | XX-Small - 3X | Small - 3X | Small - 3X | Small - 3X-Large | One Size | XX-Small - 2X-Large |
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Color
| 17 Colors/Patterns | 31 Colors/Patterns | 27 Colors/Patterns | 12 Colors/Patterns | 3 Colors/Patterns | 3 Colors/Patterns | 7 Colors/3 Lengths |
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Warm Without The Bulk
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
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Breathable Fabric
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Sizing is crazy!
These are really nice and I have ordered a few, but the sizing is very inconsistent. These are both tagged as XXS and one is many inches longer, as well as larger in the waist and legs. We do like them, so we'll keep some that seem to fit. Unfortunately we have to just try them on to see which ones work and which ones don't
Top reviews from the United States
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- Reviewed in the United States on March 7, 2025Special Size Type: One PackSize: MediumColor: White PlaidVerified Purchase
- Reviewed in the United States on February 23, 2025Special Size Type: One PackSize: X-SmallColor: BlackVerified Purchase
- Reviewed in the United States on April 18, 2025Special Size Type: One PackSize: MediumColor: Skeleton Design (Glow in the Dark)Verified Purchase
- Reviewed in the United States on January 8, 2025
These are really nice and I have ordered a few, but the sizing is very inconsistent. These are both tagged as XXS and one is many inches longer, as well as larger in the waist and legs. We do like them, so we'll keep some that seem to fit. Unfortunately we have to just try them on to see which ones work and which ones don't
Images in this review
- Reviewed in the United States on November 23, 2024Special Size Type: One PackSize: LargeColor: GreyVerified Purchase
- Reviewed in the United States on December 14, 2023Special Size Type: One PackSize: X-LargeColor: Heather GreyVerified Purchase
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!
Images in this review
- Reviewed in the United States on October 13, 2022Special Size Type: One PackSize: SmallColor: JadeVerified Purchase
- Reviewed in the United States on February 1, 2025Special Size Type: One PackSize: XX-SmallColor: Skeleton Design (Glow in the Dark)Verified Purchase
Top reviews from other countries
- Rui M.Reviewed in Canada on November 25, 2024
Perfect for Skating and Sports
Special Size Type: One PackSize: SmallColor: Heather GreyVerified Purchase
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.Rui M.Perfect for Skating and Sports
Reviewed in Canada on November 25, 2024
* They are comfortable.
* They are breathable.
* They do not shrink.
Images in this review
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Karina Solis AndradeReviewed in Mexico on January 3, 2023
Muy buena compra
Special Size Type: One PackSize: SmallColor: NavyVerified Purchase - kenneth keoReviewed in the United Kingdom on February 23, 2023
Postage doubles the cost of the purchase price.
Special Size Type: One PackSize: X-LargeColor: Heather GreyVerified Purchase - Andrea WeidnerReviewed in Canada on January 8, 2022
Good value fir the price
Special Size Type: One PackSize: X-LargeColor: Black StripedVerified Purchase - EbyReviewed in Canada on November 2, 2023
A bit big but so soft
Special Size Type: One PackSize: X-LargeColor: BlackVerified Purchase
