(Safe and durable Hot Water Bottle) The hot water bottles with cover was used premium natural rubber to ensure maximum safety and transfer the heat perfectly, keeps the water warm for a longer time.To be more safety, the temperature of the hot water should not exceed 80 degrees celsius (KEEP YOU WARM FOR LONG): The basic function of hot water bottle is to keep warm. hot water bottles are made from 100% natural rubber, which helps maintain liquid temperature and hold the heat longer than traditional silicone hot water bottle (PAIN RELIEF): Hot water bottle can be used alone as a remedy for aches, pains and sports injuries, such as back, neck & shoulder pain, muscle sore, menstrual cramps and tension. Besides the traditional hot therapy, it can also double up as a cold compress for kids with fever or to reduce swelling for minor injuries (COMFORTABLE PLUSH WAIST COVER): Comes with a plush waist cover, designed with super soft double insert for keeping warm to your hands and waist at the same time. And preventing the heat from touching your skin directly, which can cause burn ( LIFETIME SUPPORT): Never worry about its life, Our warm water bag is rigorously tested and made with love because we believe that you deserve the best. If you have any questions or need any help, just reach us and we will do our best to give you the most satisfactory solution