【Warmth of hot water for shoulders, lower back, and knees】 ⚫︎ Easy to use, just heat it in the microwave. ⚫︎ Soft, water-based gel conforms perfectly to any area. ⚫︎ Reusable and economical. For cooling, chill in the refrigerator for over 2 hours. Body: W1250 x H95 x D15 (mm) 420g Set includes: 1 cover, 1 gel pack Thank you for viewing. Although it is new and unused, there may be some slight imperfections due to home storage. Thank you for your understanding.