The Embrace ™ Relief Wrap, designed by our Michigan-based engineering team, comes with a soft microfleece material that contours to the body for a more comfortable fit. The thick neoprene insulation layer holds in the heat when placed on the injured area, which helps relieve pain and relax surrounding muscles. Our 10,000 mAh battery comes with a rapid charging block (2.1A). The battery can power the wrap for up to approximately 8 hrs on High, 10 hrs on Medium, and 15 hrs on Low to provide all-day pain relief. Choose your preferred temperature with the three-temperature heat setting. This battery-operated wrap helps keep you off the couch, and in the game of life.