Garment, yes. Cooling Packs, no. 


Yes! The UnderCool Garment is machine washable. ThermApparel Cooling Vests are made of 2 items; Nylon and Spandex (all our products are Latex free). Here is the breakdown. 

MESH: 89% Nylon / 11% Spandex
CLOTH: 87% Nylon / 13% Spandex

Ever wonder what those funny symbols mean on the garment tag of your ThermApparel UnderCool Cooling Vest? Here is the ThermApparel decoder. 

Machine wash on cold 

Do not bleach.

Dry Flat.

Do not iron. 

Treat your ThermApparel UnderCool Cooling Vest like you would exercise clothing. Wash on cold, no bleach, dry flat and no iron. 


  • Use a delicates bag
  • Close the velcro securely so it won't snag other areas of the vest. (or if you don't have a delicates bag, it won't snag everything in the washer.
  • Lay flat to dry. (the vest dries really fast after it comes out of the washer. We suggest not using the dryer as it shortens the life of the spandex.)

No! Cooling Packs are NOT machine washable.

Hand Wash

(Trust us on this one. We've tried it and they won't make it. You will end up rewashing that load a few times. Also, we won't replace any packs that have been through the washer or dishwasher...yup, we tried that one too laugh)



ThermApparel is a small business making big waves in the heat sensitivity world by designing the first lightweight, comfortable and invisible cooling vest, UnderCool. Check us out online, on our blog, or on FacebookTwitter, PinterestLinkedIn and Instagram.

Please let us know if you have any other questions or ideas in the comments below, we will follow up. You can always reach us via:
Live Chat -  |  Email -  | Phone - 855-232-7233 |  Address: ThermApparel LLC. 125 Tech Park Dr. Rochester, NY 14620

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