1. Multifunctional hot water bottle - thickened and warm, 2MM thickened PVC, effectively slow down the temperature loss, make the warmth last longer, can also be used as an ice pack or cold water bottle. It's also a great Mother's Day gift for mom. 2.Easy to use - Wide mouth is easy to fill, large thread technology, smooth rotation, screw well closed. It can only fill up to two-thirds of its capacity. 3. Helpful Helper - The classic design of this classic thermos. Treats muscle aches, pressure or cramps, arthritis, aches and pains, stiff neck, lower back pain, menstrual cramps and other common pains, and also doubles as a cold compress for those with a fever or to reduce swelling in minor injuries. 4. Anti-slip texture - The heart-shaped texture design promotes even heat dissipation, comfortable and not hot. The bottle should be replaced after two years of use. And check the stopper regularly for wear and tear damage.