High quality, Safe and DurableThe foot warmer hot water bottle is made of high quality natural rubber, very safe and durable and easy to clean. Our heated slippers for foot complies with British Safety Standard BS1970:2012. The larger opening provides better protection when pouring water, and the lid won't leak when screwed on.Soft and WarmThis heated slippers comes with 1 detachable plush lining, which is very comfortable and soft to the touch. Made of thickened high quality polyester material, very fluffy and warm. Feet warmer non electric has a heel design, which will not leak wind, making it more warm (Plush cover machine washable).Large CapacityThe capacity of feet warmers is 2L, which can store and release heat for a long time.Jacket size: 36x30 cm, Hot water bottle slippers fits shoe sizes 38-42, suitable for most adults.(Note:Fill it with 2/3 of the water, not too full.)Anti-scalding DesignHeating pad for foot inner bladder adopts diagonal stripe design to reduce the contact area and ensure a comfortable temperature. The liner can also be used alone as a hot water bottle. Note: It is best to pour hot water that does not exceed 80 degrees.Ideal for WinterFoot warmer cushion is ideal for warming feet in winter. It will always keep your feet warm on cold winter nights. Winter/birthday/Christmas/New Year's gift for family and friends.