Front and back view of ThermApparel's cooling vest, UnderCool.


The First cooling apparel designed with discretion in mind

UnderCool was specifically designed to be lightweight, comfortable, and discreet. You can wear it and no one else has to know! Wear it under your normal clothes and stay cool throughout your day. We designed UnderCool for the needs of individuals with multiple sclerosis and other neurological disorders but UnderCool can be used on any person for any need. 

are you ready to stay cool and look it too?

Is the UnderCool a game changer? I’ll say for many MSers, yes.
— Dave Bexfield

Read what people are saying about UnderCool! The experts at Active MSers, led by Dave Bexfield, conducted several tests on our products and UnderCool came out on top in 8 out of 13 categories. But don't take our word for it, read the full review here.


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