1 Pair Self Heating Leg Warmer Knee Brace Support Winter Thermal Therapy Arthritis Protector It can provide protection when fall down to avoid knees injury and keep your knees warmer at the same time in the cold weather. Our product is of elastic design so that you can wear and take them off easily, bending freely. Provides gentle supports for weak or injured knees. Besides, it is lightweight and comfortable that will help blood circulation and doesn't exert compression to your legs. Our warm thermal leg compression sleeve is a warm-hearted present for your parents in the freezing winter, warming not only their leg but also their heart. They will be moved by our product delivering your love. Material: Polyester Package include:1 Pair Knee Sleeves Note: 1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures. 2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm) Thanks for your support :)