Price: $108.99 USD

Need extra cooling?
Add an extra set of cooling packs for your UnderCool!

This Purchase Includes:

  • 1 set of cooling packs (4 individual packs)

Product Information:

Non-toxic, biodegradable, FDA approved phase change material
Safe on skin
Quickly refreeze in 20 min in ice water, 45 minutes in freezer, 60 min in fridge
Cooling relief for up to 1-2 hours*

Please review our Return and Exchange Policy here and our Warranty Policy here.


Consult your doctor or health care professional prior to using this or any cooling products for a medical condition. ThermApparel LLC will not be liable for injuries or damages resulting from the misuse or misapplication of our products.

*Cooling times may vary depending on your level of activity and the ambeint temperature. 

Please Note:

  • All prices listed in USD
  • International orders: your country’s taxes and duties are NOT included in the price or shipping
  • Adult signature required

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.