The knees are hard to straighten？ Knee pain in rainy weather？ We can help you！ Size:76*28cm Warm Size:25*16cm Large warm range extends more than 24000 hours warmness Healthy magnetic stones Improve serum lipid metabolism Function Treatment as far as possible, relax your knee, slowly increase pressure. Self-heating pad designed for the knee. High elastic belt, good elastic, wear comfortable, paste and firm, changeless form. Can effectively improve blood circulation, promote metabolism, and clear the meridians, enhance immunity. Have anti-inflammatory and analgesic, swelling the role. Easy to use, discreet and can be used anywhere any time. Safe & comfortable to wear. Type: Knee Pads Gender: Unisex Style: Casual Material: Cloth Feature: Self-heating, Comfortable, Elastic