This knee support is ideal for anyone suffering with mild strains or weak, unstable knees. A flexible EVA ring surrounds the kneecap to provide additional support while the open design relieves pressure. Neoprene fabric provides compression and heat retention to help improve circulation. Two hook-and-look straps for adjustable fit. One size fits most (measure the circumference of the knee at the patella with knee fully extended). 12 ½" - 15 ½".