Questions & Answers

Frequently Asked Questions

How does UnderWarmer work?
Once exposed to air, the built-in heat packs activate and provide warmth for hours. You simply remove it from its package and put it on. We recommend wearing this over a thin base layer. 

How long does the heat last?
Each UnderWarmer provides about 12 hours of consistent warmth, making it ideal for all-day outdoor activities like hunting, football games, or working outside.

How many times can I wear the UnderWarmer?  The UnderWarmer is a disposable product. However, if only worn for a few hours you can reseal in an airtight/ziplock bag and it can be used again. This can be done a few times. Understand that after 12 hours of producing heat, the packs will harden and the UnderWarmer is then disposable. Without a proper reseal, heat reactivation will not occur. 

Do you offer free shipping?
Yes, we offer free ground shipping on orders over $25.