This comfortable Pro-Tec Short Knee Sleeve Knee Support features a neoprene modified below-knee design to allow greater mobility than most sleeves. It also includes a buttress below the patella for additional support. Measure just above your kneecap to fit for size. Sizing Information: Circumference measurement in inches just above knee cap. Small = 13-14.5 Medium = 14.5-16 Large = 16-18 X-Large = 18-20 * Durable neoprene material * Comfortable fit * Buttress below patella for added support * Measure just above kneecap for size * Available in black * Offered in sizes S-XL