- Advanced thermoplastic material retains heat longer than traditional hot water bottles, also serves as an ice pack or cold water bottle for added versatility. - Note: This hot water bottle is not microwave safe. Fill with hot water up to two-thirds of its capacity. Ensure to tightly seal the cap after expelling air to prevent burns. - Classic design ideal for soothing sore muscles, relieving stress, managing cramps, arthritis, muscle soreness, neck stiffness, lower back pain, and menstrual discomfort. Also effective as a cold compress for fevers or to reduce swelling from minor injuries. - Features an elegant hot water bottle cap that prevents direct contact between hot rubber and skin, minimizing the risk of burns while adding a stylish touch. The rubber material should be replaced after two years of use, and the cap should be regularly checked for wear. - Practical use scenarios include: 1. Relaxation after a long day, providing comfort to aching muscles. 2. Relief during menstrual cycles, easing cramps effectively. 3. Use as a cold compress to alleviate swelling from injuries.