Experience relief and relaxation with our innovative Comfort Logic™ Lower Back Heating Wrap Offers three adjustable temperature settings. The cover, crafted from a blend of polyester and spandex, ensures a cozy, snug fit, while the lightweight and portable design makes it perfect for use at home or on the go. Zippered pocket, in the hook side, contains a USB-A plug that is compatible with most power banks power bank not included. Built with durable metal composite fiber, this heating pad is the ultimate companion for comfort.