Material: Rubber + Acrylic.Size: 36.5*31.5cm.Quantity: 1 piece.Package content: 1*warm bag1. Safe and durable.The hot bottle is made of good quality natural rubber and does not contain any harmful substances. The material of the inner tank is rubber and the outer jacket is made of knitting fabric, which can provide softness and warmth for children, adults and parents day and night in the cold winter.2. Excellent warmth The UShaped Hot Bottle provides the neck, shoulders, back and stomach with pleasant, longlasting warmth. Particularly beneficial for tension or cramps. The hot bottle cover is velvety soft on the skin and the perfect substitute for cuddling.3. Soft protective cover made of knitting The soft and fluffy knitting protective cover gives you security. This heat pack comes with a soft plush protective cover. It can regulate the temperature tighter so you can have a comfortable night, which is the ideal choice. A hot bottle with a lid calms you down and warms you up, especially in winter.4. Large capacity The hot bottle with cover provides the whole body with cozy warmth. The hot bottle with the dimensions 36.5*31.5cm. The hot bottle can be used in a variety of ways and provides cozy and cozy warmth all over the body. Note: For your safety, do not use boiling water. Do not fill too much water.5. Ideal Gift Suitable for Christmas, Mother's Day, Father's Day, Birthday and other Holidays as a gift. Whether traveling, at home, in the office or outdoors, it is very practical and an ideal gift for friends and family.