about this projectMaterial of our thermos- 2L pure natural rubber, anti-aging. Made of high-quality soft thermoplastic material, new natural rubber has a little smell, non-toxic and recyclable, the smell will disappear within a few days. Soft and cuddly knit water bottle cover, machine washable. Removable knit cover helps insulate from hot water and maintains effectiveness for 6-8 hours. The turtleneck knit style makes it easy to attach to a water bottle.Large Capacity- 2 liter thermos capacity. Dimensions L: 32cm (12.6in) x W: 20cm (7.87in) & Expanded Spout - 9.5cm/3.74in.WIDELY USED- The hot water bottle can be used to warm the whole body, treat muscle soreness, stiff neck, lower back pain, menstrual cramps, arthritis, stress or cramps, and also can be used as a cold compress for children with fever or to reduce swelling for minor injuries.Use in Multiple Scenes- Can be used to warm hands, neck, waist, back, etc. After putting the hot water bottle on the bed before going to bed, it can provide you with a warm bed. Non-electric and travel-friendly, you can use them at home, in your dorm, and during travel. It also makes a perfect Christmas giftEasy to Use: The wide mouth design makes it easier to pour water into the bottle and reduces the risk of scalding. The strong screw cap ensures no water leakage after tightening. Please Note: Fill up to 2/3 capacity. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store