Excellent Material:Hot water bottle made of eco-friendly silicone, odourless and recyclable.It can withstand temperatures from -40 to 130.Have good stability and reliability. Unique Design:Wide mouth design for easy filling. Has a soft knitted cover to prevent burns caused by direct contact with hot surfaces on the skin.It also allows the temperature to be maintained for longer and is easy to clean. Life Helper:This classic hot water bottle can treat sore muscles, stress or cramps, arthritis, aches and pains, stiff neck, lower back pain, menstrual pain relief for women and other common aches and pains, and can also be used as a cold compress for people with fever or to reduce swelling from minor injuries. Choice for Winter:Best warm choice for winter travel, camping, hiking or other outdoor activities, protect your hands or other exposed skin from frostbite. Perfect Gift:A good birthday or holiday gift for friends and family, ideal to keep you and them comfortable during the evening or for quick pain relief. It can also be used as an ice pack or a cold water bottle.