The Lateral Knee Stabilizer provides excellent side-to-side support of the knee and stabilization of the kneecap. The tubular “J” shaped buttress maintains proper alignment of the patella and provides lateral side support and stabilization. Flexible spiral stays provide medial and lateral stability while maintaining full range of motion. Constructed of sports neoprene with a soft long-loop nylon lining for therapeutic and soothing warmth. The adjustable support straps provide an adjustable amount of compression and increased stability. A seamless feel in a tapered sleeve, slip-on style. Specify right or left. Color: Black. Right Sizes Thigh Left 37-250 X-Small 12 – 13″ 37-251 37-250 Small 14 – 15″ 37-251 37-250 Medium 16 – 17″ 37-251 37-250 Large 18 – 19″ 37-251 37-250 X-Large 20 – 21″ 37-251 37-250 XX-Large 22 – 23″ 37-251 37-250 XXX-Large 24 – 25″ 37-251 Measure 4″ above center of knee. Fits right or left.