HOT WATER BOTTLE: Biggdesign hot water bag is made of advanced rubber, which is durable, not harmful to health. Also perfect one for anyone who’s particularly sensitive to strong rubber smells. It has a leak-proof lid for people of all age groups to use safely. Dimensions: 8x14 in, 20x35 cm Capacity: 67 oz, 2 l. WARM UP TO 6-12 HOURS: The heat lasts for up to 6 hours at room temperature and 7-12 hours in a warm bed. It retains heat well to stay warm for longer periods. Therefore you can rest it on your body or use it to heat up the inside of your bed before entering. Furthermore, you can carry your hot water bottle with you when you are going for a leisurely walk during the winter months or when you are commuting to work on a chilly day. SUPER SOFT PLUSH SHEATH: To provide the ultimate in warmth, this hot water bag comes with a cuddly ultra soft pelush cover in a cat design. Within seconds, the hot water bottle begins to warm the fur cover so that you can barely be apart from it for the rest of the night. The soft cover is a good safety feature to protect your skin from direct touch. It is also removable and machine washable. HOT WATER BOTTLE FOR CRAMPS: This hot water bottle with cover is the perfect companion for cold winter nights, and if you've got period pains, it can be wrapped around your body to soothe your stomach and back. Our plush hot water bottles add warmth while easing shoulder and neck pain relief. Heat has relaxing properties, helping to relax stiff and sore muscles and joints. You can also use as a cold pack which is helpfull for reducing post-exercise inflammation or pain. FIRST USE: Before first use, fill your hot water bottle with hot water and wait for 2 hours. Then you can empty it and let it air dry for about 20 minutes. It is ready to use.