Waist hot water bottle keep you warm for long,hot water bag with cover designed to retain heat to ensure your comfort and are a great ecofriendly alternative for a heating pad the soft covers distribute the heat evenly and it will accompany your family and you through the cold winter, also as hands and bed warmer. easy to use,wide bottle nozzle, hot water bag comes with an anti stopper, safety and easily let water in and out, prevent water spitting back out. our hot water bag capacity, suggested to fill to two-third, .caution: about safe kid. an adult should supervise and never fill with boiling water. hot water bottle bag plush hand and waist cover for pain relief winter warm bag.