describe: U-shaped hot water bottle: ergonomically designed and perfectly fits the curve of the neck. 360 degrees reduce pressure on the cervical spine and relax. Great for home, dorm and travel. U-shaped double-headed solid color jacket, 1000ml rubber hot water bottle Pain Relief: A hot water bottle for the neck and shoulders is the perfect physical therapy solution. It can hold up to 2 liters of hot water. Used for muscle pain, stress, migraines, arthritis and menstrual cramps, stiffness and tension. Waterproof Design: The large opening with plastic cover is easy to fill, helping to ensure maximum safety and good heat transfer. After testing, there is no risk of leakage or explosion. Screw cap prevents bottles from leaking. PERFECT GIFT: Improves blood circulation in the back of the neck and relieves muscle spasms. Great gift for parents, children, lovers and friends. Mother's Day, Father's Day, birthdays, Thanksgiving and Christmas. Neck-mounted hot water bottle: Neck-mounted hot water bottle with removable lid 1L gray Packing contents: 1 piece U-shaped hot water bottle