Leak-proof hot water bottle -- Rotatable lid with sealing design. The 4-layer threaded plug made of ABS plastic ensures the bottle's leak-proofness. The hot water bottle is strong and sturdy, without causing any harm even if it is squeezed under your body. (NOTE: Please fill two-thirds of the water at 70-80C). High-quality and luxurious fur sweater cover -- This hot water bottle comes with a luxurious faux fur cover. Super soft and smooth. Warmer and more comfortable in winter. As a fluffy hot water bottle, it is also an ideal Christmas gift. High-quality health materials -- Our water bottle is made of medical-grade PVC material. Explosion-proof and heat-resistant. It does not produce a strong odor at high temperatures and retains heat longer than conventional rubber bottles (6-8 hours). It can also be used as an ice pack or as a cold water bottle. Versatile Use -- The hot water bottle with its soft faux fur cover can relieve menstrual cramps, muscle pain, and aches in various body parts. Warm your hand, foot, or body in the cold winter and cool yourself down with cold compresses in the summer. It is a perfect gift for friends and family. Safe and Easy to Use -- The hot water bag is explosion-proof, leak-proof, and odorless. The wide opening design is very convenient. Quickly and safely pour the water into the hot water bag without overflowing, which is safe and reliable for daily use.