MICROWAVE FRIENDLY: This hot water bottle bag is designed for convenience. Simply remove the knit cover, fill it with water, and heat it in the microwave for less than 3 minutes (ensure your microwave is set below 1500W) FOOD-GRADE SILICONE MATERIAL: Made from food-grade silicone, this warmer hot water bottle is odorless, recyclable, and safe for your use. This choice not only ensures your safety but also contributes to a healthier environment LARGE CAPACITY AND EASY FILL DESIGN: Our hot water bag boasts a large capacity and a wide mouth design, making it easy to fill with water. This practical feature means you can prepare your hot water quickly and without spills SOFT KNIT COVER FOR SAFETY: Our hot water bag features a soft knit cover that prevents the hot surface from making direct touch with your skin. This thoughtful design minimizes the danger of burns VERSATILE FOR COLD COMPRESS USE: Fill the hot water bag with cold water and place it in the refrigerator to create an effective ice bag. This multifunctional aspect allows you to use it as a cold compress for pains, sports injuries, or fevers