Premium Material : This hot water bottle is made of thermoplastic material that is recyclable. Advanced thermoplastic holds heat longer than traditional hot water bottles with cover, also works as an ice pack, or cold water bottle. It also can be as mothers day gifts for mom. But please caution: The hot water bottle rubber is not suitable for Microwave oven heating.Anti-leak Design : This hot water bag with cover with wide mouth is easy to fill and the anti spurt lip prevent water spitting back out like those old rubber ones, reduce the risk of burns by hot water.Care Instruction : Unique texture makes skin contact safer and more comfortable. Comes with an elegant fleece hot water bag cover to prevent the hot pack for pain from being in direct contact with your skin to cause burns, plus it has a more classy and personalized look. The hot water bottle rubber should be replaced after two years of use. And check stopper for wear and tear damage at regular intervals.Pain Relief : This hot water bag for pain relief is a time-honored method of treating sore muscles, stress or cramps, arthritis, aches and pains, stiff necks, lower back pain, menstrual cramps and other common aches and stresses of everyday living.After-sale Service : We are so confident with the quality of our product. But if you don't completely satisfied with this product for any reason, please feel free to ask us at any time!