Knee support: Get a pair of self-heating knee and leg support pads. Adjustable: The Velcro design makes it easy to adjust the tightness to suit you. Sizes: Choose your size from M-2XL. Colours: Valid in black or grey. Self-heating: The pads heat rapidly in seconds, working to provide comfort and support for aches and pains, whilst aiming to promote blood circulation. Comfortable: Provides a soothing compression for comfort over long periods. | Pair of Self-Heating Magnetic Leg & Knee Support Pads - Black | Wowcher