Custom Fit. Helps Relieve Weak Or Sore Knees. Side Air Vents For Fit And Comfort. Open Patella Design For Support. Adjustable Straps For Custom Fit. Easy To Apply. Comfortable Neoprene Blend Material Helps Knee Retain Warmth. Side Ventilation Holes For Breathability And Reduced Bunching Behind Knee. Adjustable Straps For Proper Support, Comfort And Fit. For Left Or Right Knee, This Support Has Been Designed With Three Adjustable Straps In Order To Create A Customized Fit For Most Body Types. Developed In Collaboration With A Panel Of Physicians, Surgeons And Medical Specialists. Made In Taiwan.