General description No-Electricity Foot Warmer: The large hot water bottle has a 2L capacity that can store and release heat for a long time. Inside the heated hot water bottle is a soft and fluffy lining that wraps your feet warm during the cold season. The heated slipper features a heel design that prevents wind from passing through, enhancing warmth. The plush cover is machine washable, making it easy to maintain. Technical specifications Capacity: 2L Dimensions: 36x30cm Material: High-quality thickened polyester and anti-aging natural rubber Usage Ideal for warming feet in winter Can be used alone as a hot water bottle Best to pour hot water that does not exceed 80 degrees Other information Anti-Scald Design: The foot warmer inner bladder features a diagonal stripe design to reduce the contact area and ensure a comfortable temperature Safe and easy to use: Designed to be leak-proof and explosion-proof with a wide opening for easy filling, screw cap, and splash-proof lip to prevent