1.HEAT & COLD PRESERVATION: This soft hot water bottle is an ideal bed warmer. Five minutes before bedtime, the hot water bottle is filled with hot water and placed on the bed, which is warm and comfortable. In summer, you can also pour ice water to cool off. 2.INCREDIBLE THERMOTHERAPY: Hot water bottles are very helpful in relieving pain like muscle pain, back pain, spasms, earache and other minor illnesses. Fill it with hot water and put it on your stomach to relieve dysmenorrhea. 3.SOFT & COMFORTABLE FEELING: The hot water bottle cover is made of soft wool material, making you feel comfortable. The lid of the hot water bottle can also reduce the heat loss of the water and extend the use time. The cover also has the function of heat insulation, giving you a durable, warm and comfortable feeling. 4.ECO-FRIENDLY & PRACTICAL: It can save costs. It keeps warm in an environmentally friendly way and eliminates the need to heat the entire room 5.Can save heating or electricity. You just need to pour hot water into this hot water bottle and tighten the lid. Note: For your safety, do not use boiling water. Don't fill too much water, just 3/4 full.