Don't let the heat get in the way of the things you love most.
It's time to take back your life, stay cool and be cool!

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Lightweight

No one wants a bulky cooling vest weighing them down. That's why UnderCool cooling vest weighs less than 2lbs— including the cooling packs!

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Comfortable

Made from breathable mesh and wicking fabrics, the UnderCool cooling vest is designed to keep you cool and dry. Our flexibility is unmatched!

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Invisible

Our slim design conforms to your shape, you can even wear the UnderCool cooling vest under your clothes. You can stay cool and no one else has to know!

"ThermApparel has flipped the script on cooling vests.
UnderCool is a game changer."

-ActiveMSers

"I have a spinal cord injury, and have lost the ability to sweat... I cannot wait to use this vest more in games and while training."

I have a C7/T1 incomplete spinal cord injury, and have lost the ability to sweat due to my injury. I am also an adaptive sports athlete who has heavily participated in numerous sports in the 13 years I have been injured.  Losing the ability to sweat has negatively affected my performance, as my body becomes extremely overheated. (sometimes reaching 104 degrees after a game!)

I participated in a wheelchair Rugby tournament over the weekend and used the UnderCool vest in every game. I took my temperature after each game and it was 98-99 range not over 100 degrees like prior to using the vest. I wasn’t soaking wet because I didn’t need to constantly pour water all over me to cool me. I cannot wait to use this vest more in games and while training (I especially look forward to training outside on hot days this summer, which is something I previously avoided at all costs)