SandPuppy Backstrap is an electric heating belt for back pain. Through variable heat, it soothes aching muscles and opens up your day to more possibilities. If your back has ever stopped you from getting out of the house; if that back pain made it impossible to get anything done, the SandPuppy Backstrap makes your day better. Don't let back pain get in the way of your peace of mind! The SandPuppy Backstrap provides 3 levels of heat using a single switch. The maximum temperature on full charge goes up to 68 degree Celsius. Its sleek and lightweight design means you can fold it and carry it around. It emits Far Infrared Radiation (FIR) heat that not only warms the top layer of the body but can also penetrate up to 5 cm deep into the body, making it far superior to other heating solutions.