- Advanced thermoplastic material retains heat longer than traditional hot water bottles, making it effective for soothing sore muscles and providing comfort. It also doubles as an ice pack or cold water bottle for versatile use. - Important safety feature: do not heat in the microwave. Fill with hot water up to a maximum of two-thirds capacity. After use, securely tighten the lid to prevent burns. - Classic design provides relief for a variety of ailments, including muscle soreness, stress, menstrual cramps, arthritis, and lower back pain. It can also serve as a cold compress to alleviate fever and reduce swelling from minor injuries. - Comes with a stylish lid that prevents direct skin contact with hot rubber, reducing the risk of burns while enhancing aesthetic appeal. For optimal safety, replace the rubber bottle after two years and regularly check the lid for wear. - Ideal for personal use or as a thoughtful gift for women, this hot water bottle is perfect for home relaxation, travel comfort, or targeted pain relief. Whether you're looking to unwind after a long day, manage menstrual discomfort, or soothe an injury, this product is designed to meet your needs effectively.