1. Effective Relief: Our hot water bottle bag is great for pain relief, arthritis, sports injuries. Heat therapy helps relax your tired muscles and tense shoulders from stress and too much exercise. ^2. Safe material: Durable and safe: The hot water bottle is made of rubber to ensure maximum safety and transfer the heat perfectly, keep the water warm for longer.^3. Easy to Use: Equipped with an anti-splash stopper, which makes water running in and out safe and easy. It is recommended to fill the water to the 2/3 position.^4. All-round warmth: The design of the waist protector can protect the skin from burns well. You can attach the hot water bottle to your legs and shoulders wherever you want.^5. Warn that the hot water bottle can cause burns and avoid direct contact with the skin for long periods of time.