【Electric Foot Warmer】Made of high-quality natural rubber, safe and durable, not easy to leak, removable for cleaning and repeated use. The hot water bottle foot warmer has a capacity of 2 liters and can store and release heat for a long time. 【Safe and Easy to Use】The hot water bottle's inner tank is designed with a large opening for easy filling. High-quality natural rubber, leak-proof, explosion-proof, and durable. The spiral design of the lid prevents water leakage. The hot water bag lining can also be used as a separate thermos bottle. 【Soft and Warm】The 2-in-1 protective cover for the hot water bottle is made of high-quality plush, comfortable and soft to the touch, preventing direct contact between the skin and the hot water bottle's inner tank, avoiding burns and extending the heat preservation time. 【Perfect Design】The hot water bottle foot lining has a diagonal stripe design, which is non-slip and anti-scald and distributes heat evenly. The thermos bottle cover has a 360° heel design, suitable for most adults. The bottom of the hot water bottle's protective cover has a non-slip design to prevent slipping. 【Ideal for Winter】The hot water bottle can relieve cold feet, relax and warm the legs, promote blood circulation, and keep feet warm at all times. Rubber hot water bottle is the best choice for gifts to relatives and friends on Christmas, Mother's Day, Father's Day, and other festivals.