Highly density foam lining and 55D sponge ensuring excellent elasticity and lasting comfort The surfaces is make of waterproof Oxford cloth and equipped with bottom anti slip points, which can keep dry and anti slip even in light rain or snow Using a 10000mAh portability power supply, it can last for up to 3 hours at high temperatures, 5.5 hours at mediums temperatures, and an impressive 10 hours at low temperatures ( Please note that our product does not include a portability power supply It is the perfect companion for, winter camping, sports, ice fishing and other activities Provide three adjustable heating levels Red represents high temperature ( 122-140 ℉), blue represents moderate temperature ( 104-122 ℉), and green represents low temperature ( 86-104 ℉ The seat cushion is equipped with adjustable straps that can be fixed to the seat or tree, and comes with handles for easy transportation and installation