Provides compression, Medical and lateral support and warmth during periods of increased activity Active performance support therapy for sports injuries Promotion of increased blood flow may enhance recovery Thermoskin Sport Knee Stabilizer provides compression, medial and lateral support and warmth for the knee during periods of increased activity. Exclusive stabilizer system allows users to pinpoint the location and level of support according to their specific needs. The stabilizer system has three pockets on each side of the knee. The four flexible metal stabilizers may be placed in any of these pockets, allowing the user to pinpoint the areas where additional support is required. The Thermoskin Sport products are designed to be specifically worn during active performance. Thermoskin Sport products have an exclusive three layered material composition for comfort and maximum performance. The inner layer is soft against the skin and allows for airflow, the middle layer provides support & compression, the outer layer is Velcro responsive for greater adjustability and comfort. Sizing Guide: Measure the circumference of the knee cap while in a standing position. Small/Medium 11 - 13 3/4 inches. Large/X-Large 14 - 17 inches.