You know that grinding, creaky feeling when you first stand up? That's your knee joint running dry, starved of the blood flow and warmth it needs to move smoothly. The Therapeutic Tri-Weave™ fabric traps your body heat and reflects it back into the joint, creating a gentle warming sensation that increases circulation and lubricates stiff tissues. It's like spraying WD-40 on a rusty hinge. Within minutes, that locked-up, crunchy feeling starts to melt away. Your knee moves easier. Smoother. Like it used to.