Get some warmth with the Pair of Tourmaline Magnetic Self-Warming Knee Supports Wear it for 20 minutes and feel the warmth start to ease joints Improves circulation and blood-flow with magnetic tourmaline technology Comfortable adjustable fit with a Velcro strap Made with a soft self-adhesive outer cloth Easy to slide on and off and great for hiding under clothes during the day Get a Pair of Tourmaline Magnetic Self-Warming Knee Supports for 11.99 pounds instead of 29.99 pounds