[Environmental Protection and Safety] The hot water bottle with cover are made of natural rubber. non-toxic, odorless and recyclable. The plush cover feels great to the touch and the heat stays on longer giving you extra comfort. [Excellent Thermotherapy] The hot water bottles are ideal for treating pain caused by minor ailments such as muscle aches, backaches, cramps, menstrual cramps and toothaches. [Long Keep Warm] Hot Water Bottle have a size of 32 x 20 cm and a capacity of 2L. At an ambient temperature of 15 degrees, the Hot Water Bottle can effectively keep 6-7 hours warm. [Leak-Proof Design] Wide opening for easy refilling. Note: For your safety, do not use boiling water. Do not fill too much water, only 2/3. Ensure maximum safety and transfer heat well. [Essential Winter Warming Tools] hot water bottle with lid stays warm all night. Lasting warmth for your bed, feet and toes in the coldest winter. Ideal gift for Christmas, Mother's Day, Father's Day, birthday, etc.