Item Type: Self heating knee pads Material: Magnet 1HOT PRESSED MAGNETS: These heating knee pads are heated and insulated with heat compression magnets, which are heat therapy and can effectively warm your knees for a warm winter. 2BREATHABLE: These heating knee pads are made of perforated fabric, comfortable and not stuffy, so you'll feel comfortable and light even when you wear a lot in winter. 3COMFORTABLE: These heating knee pads can effectively ease knee pain and improve knee discomfort by heating, taking care of your fragile knees. 4NOT EASY TO FALL: This knee brace has a three dimensional patchwork design and a double strap design that fits perfectly to the curve of the knee and is not easy to fall off. 5ADJUSTABLE: these heating knee pads has a hook and loop design with good adhesion and double straps that can be adjusted at will to keep your knees at a comfortable level that satisfies you all the time.2 x Self Heating Knee Pads