Keep You Warm for Long- The basic function of hot water bottle is to keep warm. OliviaLiving hot water bottles are made from High-quality PVC material, which helps maintain liquid temperature and hold the heat longer than traditional silicone hot water bottle. Fill the bottle with hot water, place it in the bed up to 10 minutes before going to bed, our thermal hot water bottles will prepare a warm and wonderful sleep atmosphere for you. Multifunctional Hot Water Bottles- Hot water bottle can be used alone as a remedy for aches, pains and sports injuries, such as back, neck & shoulder pain, muscle sore, menstrual cramps and tension. Besides the traditional hot therapy, it can also double up as a cold compress for kids with fever or to reduce swelling for minor injuries. Protective Cover- Shipped with a soft removable knit cover to help insulate the hot water and maintain effectiveness for 6-8 hours. It also protects the hot water bottle from crash and dirty and keeps your hot water bottle using longer. The attractive pattern on the cover makes the hot water bottle a thoughtful and cozy gift for your mother, father, children, friends in Mother's Day, Thanksgiving Day, Christmas and New Year's Day. Easy To Use- Allow boiling water to cool slightly before pouring. Grab the neck of hot water bottle. Fill in water slowly up to 2/3 full. Press the residual air out slowly and tighten on the screw cap. Make sure there are no leaks before using. Package included: 1 Rubber Hot Water Bottle, 1 Soft Knit Cover. Our hot water bottle is manufactured to B.S.1970:2012 to ensure maximum safety. NOTICE: We recommend not to touch skin directly after hot water is injected to avoid scalding, use it safely with suitable temperature.