UnderCool is a lightweight garment designed to keep you cool and comfortable in any situation. The unisex design can be worn under virtually anything! Unlike other cooling garments, you can wear UnderCool directly on your skin. With UnderCool you can stay cool and look it too!

UnderCool uses cooling packs made from phase change material to keep you cool and comfortable. Our phase change material is a specialized material that is chemically engineered to freeze at 21C. Our packs are designed to keep you cool and comfortable without causing ice burns. That’s why our cooling vest and cooling packs are safe to wear directly on your skin.

Our cooling packs re-freeze in any environment under 21C. Ice water, freezer or refrigerator will re-freeze the packs. 20 minutes in ice water, 40 minutes in the freezer or 60 minutes in the fridge will re-freeze the packs.

The packs last 1-2 hours depending on your personal level of heat, level of activity and ambient temperature: 2+ hours if you’re wearing it inside an air-conditioned area; 2 hours if you’re doing light housework; 1.5 hours if you are outside doing gardening or taking a brisk walk; 1 hour if you are on a treadmill or exercising, under 1 hour in extreme temperatures.

UnderCool uses multiple layers to maximize cooling effect and duration. The garment is made of comfortable wicking fabric to keep you cool and dry and features mesh panels for maximum breathability. The phase change material packs are lightweight and flexible. UnderCool features velcro for easy on and off application and adjustable straps for the best fit.