Back on Track® Knee Boot helps relieve and heal injured muscles, joints, and tendons. Ideal for injury recovery or prevention in the tough to wrap knee area. Consisting of a neoprene exterior, Back on Track infused the interior of the boot with their state-of-the-art Welltex fabric, which contains ceramic powder. Heat therapy is a well-recognized method used to help relieve and heal injured muscles, joints, and tendons. When you use these boots it helps to use standing wraps to prevent them from sliding down. Contoured Shape for better fit. Pair.