UnderWarmer is a patented unisex heated compression base-layer shirt . Built in are 8 Large Heat Packs that will immediately activate once removed from its packaging. Once activated the UnderWarmer will reach its max temperature within 30 minutes and stay warm for over 12 hours. Whether you are tailgating all day and cheering on your favorite sports team or spending hours outdoors hunting and fishing, with the UnderWarmer you have a personal source of heat that is ready when you are-keeping you warm all day long. By partnering with UnderWarmer you will have access to our newly released patented product and the potential to earn uncapped commission of 10% on all sales. The average order size is $45.00