We are proud to announce our newest partner, Race to Erase MS!

dreaming of a cool
christmas?

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UnderCool – Made for you.

confidence, comfort and freedom through cooling.

introducing Undercool, the revolutionary cooling vest that’s lightweight, invisible and meticulously designed for extreme comfort and freedom of movement.

Sick of bulky cooling vests cramping your suit? We get it.

That’s why we've created UnderCool, the first cooling vest to be worn under your suit.

UnderCool cooling vests are designed to be discrete, but engineered to be cool. Four cooling pockets provide cool relief where and when you need it most. Adjustable straps and breathable, lightweight fabric keep you comfortable — no matter where life takes you.

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Hear what others have to say...

“It doesn’t add to my cookie zone.”
- Santa Ed Taylor “That Santa Guy” The Santa Claus Conservatory
“Being Mrs. Claus would of been impossible without my cooling vest.”
- Mrs. Claus
“Keeps me cool during those home visits sitting near the fireplace or in the hot sun at the Christmas in July events”
- Santa Jim

Don’t just take our word for it...


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White Festival Bundle

$268.99

Our most popular package. Signature UnderCool Cooling Vest with 2 sets of cooling packs. Double up the packs for extra cooling time.

Black Festival Bundle

$268.99

Our most popular package. Signature UnderCool Cooling Vest with 2 sets of cooling packs. Double up the packs for extra cooling time.

Resources.

Hear what Santa Ed Taylor says about the UnderCool Cooling Vest...

Questions about our vests or shipping? Reach out to the ThermApparel team toll-free at 855-232-7233, write to us through our website’s contact form or chat with us via live chat. We always respond because, otherwise, that wouldn't be cool.