PLEASE NOTE: The product comes with a Christmas card so you can give the product as a gift to your friends or family at Christmas. High Quality: Made of high-quality natural insulating rubber, it has an excellent thermal insulation effect and can maintain the temperature of the liquid for a long time. It can also be used as an ice bag or cold water bottle. Easy to use: Just fill it with hot water, then put on the cover, very easy to fill, don't worry about hot water spraying. High Safety: It has high-temperature resistance features and can safely withstand hot water for a long time, preventing water leakage or deformation. Multiple applications: Not only can it provide warmth during the cold winter, it can also treat muscle aches or cramps, arthritis, lower back pain and relieve neck stiffness. It can also be used as a gift for women to relieve menstrual cramps and other common aches and pains. Ice water can also be filled with a cold compress to reduce swelling and minor injuries.