How Do You Wear A Cooling Vest Like UnderCool?

ThermApparel's UnderCool Cooling Vest is designed with discretion in mind with its low profile design and skin-safe Cooling Packs. UnderCool is meant to be worn under your clothing safely next to your skin

UnderCool is easy to wear. First make sure the packs are charged and ready to go, if not fold the vest and place it in the freezer for 40 min, fridge for 60 min or pull the cooling packs out of the vest and lay them flat in ice water for 20 min.

Then slip on the straps, close the velcro in front, and cover with your favorite t-shirt, tank, dress, or shirt.

Watch Julia and Brad explain and show how to wear a ThermApparel UnderCool Cooling Vest with summer clothes.



UnderCool is a unisex garment that comes in 5 sizes XXS, S, M, L, and XXL. If you need help with sizing check out our sizing guide for videos and info. The garment has adjustable straps and velcro across the front to accommodate the waist of any user.

UnderCool can be worn both under and over clothing, according to your preference. But, we recommend wearing it under your clothes for maximum cooling. No undershirt is required.