






❄️ Keep your little hero warm, dry, and unstoppable this winter!
HEROBIKER Thermal Underwear for boys features ultra-soft fleece lining combined with breathable, moisture-wicking fabric and four-way stretch for maximum comfort and flexibility. Designed as a top and bottom set, it fits seamlessly under clothes or sports gear, making it perfect for cold-weather activities like skiing and snowboarding. Highly rated for durability, comfort, and warmth, this thermal set is a must-have for active kids facing winter chills.





| ASIN | B0B1TW3MGW |
| Best Sellers Rank | #126,509 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #66 in Boys' Thermal Underwear Sets |
| Customer Reviews | 4.5 4.5 out of 5 stars (659) |
| Date First Available | August 22, 2019 |
| Department | unisex-child |
E**R
My little one didn't want to take them off!
I would give 10 stars if I could! I will be ordering more for my little guy. It was a struggle to get him to even let me wash them. He has issues with textures but these were perfect for him in every way. I ordered them for a trip to the mountains, thankfully they arrived 5 mins before we left (my fault for last min ordering). They are not thick and have a thin lining of fleece but they are smooth, soft and kept him very warm and comfortable on our hikes in the cold mountains. He wore them the entire trip barely letting me wash them. They wash well, no shrinking nor fading of the vibrant blue. This is definitely worth every penny. Thank you from me and my little one!
G**7
Perfect for below zero weather
I got two pairs of thermals for my middle schooler who is on the spectrum and is very picky with what they wear. They absolutely LOVED these thermals and didn’t want to take them off! They fit snug without being constricting and the flat seams do not irritate their skin. My kid is 5’ tall at age eleven and the size Large was perfect. They said they were warm and dry all day even when playing outside in the snow. I will be purchasing another set because the quality is fantastic. Honestly you can’t have enough for your kids especially if they are active.
C**O
Perfect fit and so warm
My son won't take them off. Got them to keep him warm under a Halloween costume. But he wants to wear them all the time now. So soft and warm. He is a skinny 8 year old. They fit perfectly.
D**I
Nice quality/ soft fabric
Nice quality. Top runs small. Pants fit as expected.
J**S
Works great!
My son loves this set. It keeps him warm as pjs, under his clothes or under his soccer uniform. The quality is great. Worth the cost. Lightweight material but definitely keeps him warm. The blue color is perfect for his soccer uniform and just as pictured.
L**E
Good but way small
It is warm however the sizing is too small. The top is way to small and although the pants are the right fit
F**R
Ultra soft and warm
Boys winter thermal underwear fits comfortably under any clothes. The soft lining gives comfort and warmth in cold weather also keeps sweat away and prevents chafing.
J**H
Super warm and soft
My son loves these! I didn’t know if they would be warm, but he said he stayed warm the whole time and they were very comfortable. They feel like soft pajamas!
A**3
ممتازة جداً وتعطي دفء وراحة ومرونه
N**Z
Muy buena calidad, buen acabado, textura suave y calientita, muy recomendable.
K**A
Calientito por dentro y suave dentro y fuera talla XL queda bien es como talla 12 para altura de 154cm muy bueno para debajo de pijama o debía de la ropa
A**A
Buena calidad y comodo.
G**E
Lo usa mi hijo debajo de la ropa para ir a la escuela, y no pasa frío. Realmente conserva muy bien la temperatura corporal. Lo recomiendo completamente.
Trustpilot
3 weeks ago
2 weeks ago