Premium Material: Our hot water bottle is made of thicken PVC material and designed for anti-explosion, rest assured that you will not get burned, odorless thermoplastic material. 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.Scald-proof Design: This hot water bag with cover is designed with grid texture that can prevent you from scald by hot water and the 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.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.Package Include: Our hot water bottle rubber comes with an elegant pure 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.After-sale Service: We are so confident with the quality of our hot water bottle. But if you don't completely satisfied with this product for any reason, please feel free to ask us at any time!