Relax your body and relieve pain: Foot heating can relieve pain and soreness in your feet and legs. Increases blood circulation, relaxes and warms the legs. Protect your feet from poor circulation, arthritis and cold floors. Hot water bottles can help relieve cold hands and feet, low back pain, dysmenorrhea, arthritis pain, sports injuries, convulsions, stomach pain, etc. It can also be used as a cold compress to temporarily reduce fever. DURABLE, SAFE AND EASY TO USE: The thermos bag foot warmer is made of natural rubber for maximum safety and perfect heat transfer, large capacity of 2 liters, should be filled to about 2/3 full. The wide mouth makes it easy to fill with water, and the anti-spray lip prevents water from spraying out like old rubber. We recommend that the temperature of the pouring water should not exceed 80 degrees Celsius. SUPER SOFT AND WARM: Both sides of the foot warmer are made of super soft flannel, making them extremely durable and warm. Heats up in minutes. Keep warm for several hours. Non-slip bottom material, lightweight and portable, can be used to warm feet and hands or as a travel pillow whether you are at home, in the office or in the car, perfect for cold days and as a gift for loved ones. Suitable Size:: The foot warmer hot water bottle fits feet up to size 42 (feet shorter than 27 cm), suitable for most adults, especially suitable for women and children, the heated slippers have a 360 surround design, soft and thick material and comfortable design to absorb heat Retain in pad. The bottom is anti-slip and has a flexible range of use. It is suitable for use under the desk or on the sofa to keep warm in cold weather. Surprise gift and quick after-sales: The foot warmer hot water bottle takes care of your feet in a soothing and warm way, cold feet will be a thing of the past, this is a great gift for your family, friends and your loved ones. We guarantee the quality of our products and provide you with satisfactory after-sales service. If you have any questions about our products, please feel free to contact us.