Key benefits - Promotes blood circulation and keeps the knee warm. Eight built-in self-heating magnetic pads reflect body heat as far infrared rays (FIR) to help relieve joint pain and arthritis, muscle pain and cramps, stiffness, and Raynaud's syndrome. - All day comfort and warmth. Outer layer is high quality SBR with a neoprene exterior and OK fabric inner layer; soft, breathable, non-toxic. The thermal cushion uses coral fleece to keep the knees warm. - Ergonomic and secure fit. Three-dimensional tailoring with an upgraded, larger wrap and a strong hook-and-loop closure provides a non-slip, snug fit that is easy to put on and take off. - Breathable and moisture-wicking. The material absorbs moisture and helps keep the skin dry for comfortable wear. How it helps - The FIR reflecting pads work with body heat to provide targeted warmth and support, aiding relief from knee discomfort and stiffness while you move. Materials and design - Outer: neoprene with SBR blend; inner: OK fabric; thermal cushion: coral fleece. Built-in eight self-heating magnetic pads for FIR therapy. Use scenarios - Daily warmth and pain relief during outdoor activities or casual wear in cold weather, especially for arthritis or stiffness. - Post-workout or after long periods of sitting to ease muscle soreness, cramps, and joint tension. - Continuous knee support for people with Raynaud's syndrome during office work, travel, or long commutes.