1. Thickened PVC: This hot water bottle adopts thickened PVC material which can slow down the heat dissipation, ensuring reliable warmth. 2. Detachable Cover: This hot water bag is designed with detachable, soft and plush cover, effectively driving out the cold in winter to keep warm. 3. Threaded Stopper: This hot water sack adopts stopper with large threads, which ensures high sealing performance and high safety. 4. 1000ml Capacity: This hot water bottle in cartoon style provides 1000ml capacity, wide mouth design can keep you away from scald when pouring the water. 5. Cartoon Style: This hot water bottle with cover also features cartoon bear style, very cute and eye catching. Spec: Item Type: Hot Water Bottle Material: Plush, PVC Use Time: Warming Hands for 1 to 3 Hours and Warm Beds for 2 to 6 Hours (Note: the Above Test Results Are Under the Condition That the Hot Water Bag is at a High Temperature of 90℃, and There Will Be Some Errors in Different Temperature Environments) Capacity: 1000ml Product Size: Approx. 24.5 x 17.2cm / 9.6 x 6.8in ( Manual Measurement, Slight Error May Exist ) How to Use: 1. Roll up the inner container and put it into the cover. 2. Screw the threaded water plug. 3. Fill 2/3 of hot water. 4. Exhaust excess air from the hot water bottle. 5. Tighten the threaded water plug. 6. Turn it upside down to check whether there is water leakage. packing list: 1 xHot Water Bottle(With Inner Container) Note: You need to fill water by yourself.1. The boiling water should not exceed 80℃, the hot water is easy to jump out when filling water, which will cause potential risks. 2. The amount of water injected should not exceed 2/3 of the capacity of the hot water bag, and the excess air should be excluded. 3. The heat preservation time is related to the environmental temperature, water temperature and the way of placing (inside or outside the bed), and there will be differences under different conditions.