Whenever the cold winter comes, everyone will buy a lot of warm products, and hot water bottle is an essential product for everyone in winter. 1. Hot water bottle is a time-honored method of treating sore muscles, stress or cramps, migraines, aches and pains, stiff necks, lower back pain, menstrual cramps, and other common aches and stresses of everyday living. Through close contact, heat will enter your body and relieve your pain and discomfort. 2. Allow boiling water to cool slightly before pouring. Grab the neck of a hot water bottle. water injection amount should NOT be more than 3 4 of an extra long hot water bottle. Press the residual air out slowly and tighten the screw cap. Make sure there are no leaks before using. 3. The hot water bottle with cover adopts high-quality soft materials that help to insulate the hot water, you are well protected from excessive heat, and high-quality soft fleece materials for the extra comforting feeling you will love. 4. Hot water bottle with a soft fleece cover has a capacity of 2 liters means that the hot water bottle can give off heat for a very good time, you can use them at home, in the dorm, office, and during travel. See moreDouble warmth-The wrap around hot water bottle with hand warmer pocket, you can put hands in the pockets, hot water bag will bring you double warmth for body and hands!. Best Gift in Cold Winter-Hot water bottle with a waist cover is widely used for relieving physical pain, waist, neck, sore muscles, back pain, and period cramps, and to warm up on a chilly night, it must be the most attentive gift for lovers, family, girlfriend on Birthday, New Year, Christmas Valentine's Day, help to create a cozy more than festival warm atmosphere for you. Safer and More Comfortable-The hot water bottle is made from high-quality materials thickened version of natural rubber, softer and can fold. After filling with hot water, please tightens the stopper so that you can turn it upside down to ensure that it does not leak water. ( For safe, we suggest that the water injection amount should NOT be more than 3 4). Long Time Heat Preservation-The hot water bag cover is made of plush fabric, which feels comfortable, and smooth with a better warmth retention effect and the heat will keep you warm for about 3-4 hours at room temperature, so you don't need to worry about having to refill it again and again on a chilly day. The shape offers greater coverage, so more parts of your body can be kept warm at the same time and aches and pains can be reached more easily. Large Capacity Large Hot Water Bottle 2L-The hot water bottle long with dimensions 28.3 4.7 inches has a capacity of 2 liters so that you can fix the long hot water bag on your neck, waist, and shoulder. Through hot compress and hyperthermia, the long water bottles will relieve your body's soreness and pain, then you will experience the soothing comfort of the heat bag for even longer.