Don’t let heat keep you from doing the things you love.

UnderCool – Made for you.

Designed for heat sensitivity caused by:

  • • Multiple sclerosis (MS)
  • • Fibromyalgia
  • • POTS
  • • Lupus
  • • Hormones
  • • Other disorders

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

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

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.

Crave even more cool? It’s all backed by our 30-day money-back

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Hear what others have to say...

“I love how hidden it is”
Dr. Gretchen, MS Specialist
“I never thought I would wear a cooling vest and like it.”
- Meg Lewellyn, BBHWITHMS.com
“It was easy to have on for so long”
- JP Summers

Don’t just take our word for it...

Learn more about heat sensitivity

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.