Save $30 on UnderCool 3.0 through 3/31. 



Improved shoulder straps, more breathable mesh, updated sizing.

Contoured to fit your body, lightweight and breathable, UnderCool will keep you cool under any condition without cramping your style.


Women's 3.0 UnderCool cooling vest model

Undercool 3.0



everything you need to get started

Women's 3.0 UnderCool cooling vest festival bundle

Festival 3.0 Bundles



extend your cooling time

Save $37 Women's 3.0 UnderCool cooling vest adventure bundle

Adventure 3.0 Bundles



chose both colors & skip laundry day

Save $40Women's 3.0 UnderCool cooling vest bundle

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.