Pain Relief: The thermos bottle holds 1.8 liters of hot or cold water to comfortably relieve aches and pains, muscle aches, arthritis pain and more for soothing, natural pain relief. When used for heat therapy, the flexible bottle conforms to the contours of the body for targeted relief from neck stiffness, low back pain, knees, shoulders, ankles, menstrual pain, and more. Winter Choice: Best warm choice for winter travel, camping, hiking or other outdoor activities, protect your hands or other exposed skin from frostbite. Equipped with a knitted hot water bag cover to prevent the skin from directly touching the hot water bag and causing burns. EASY TO USE - Allow boiling water to cool slightly before pouring. Grasp the neck of the thermos. Slowly add water until 2/3 full. Slowly press out the residual air, then tighten the nut. Make sure there are no leaks before use. PERFECT SIZE FOR ANY AGE - Mini Cute Thermos, size 35*20cm. It is small in capacity, portable and easy to hold. It's a thoughtful and comforting gift for mother, father, kids, friends on Mother's Day, Thanksgiving, Christmas and New Year's Day. Care Instructions - Due to the natural rubber material, there may be some smell when you first use it, you can put it in water for several hours to get rid of the smell. Mesh texture makes skin contact safer and more comfortable. Thermos rubber should be replaced after two years of use. And check the plug regularly for wear and tear damage. NOTE: Thermos rubber is not suitable for microwave heating.