Knee Support, AEGEND Basic Breathable Knee Brace for Yoga, Workout, Sports, Men, Women [Legend Protector Series], One Size Fit Most, Black, 1 Piece Material: Thick neoprene provides protection, compression and warmth to enhance healing. Extra-strength Velcro is fully adjustable to accommodate users with different needs. Long-lasting durability. Silicon anti-slip strips to prevent slipping. Size: Knee brace with 3 bands: 17.12(Middle) x 21.25 x 22.44, height is 7.67. Knee brace is stretchable. It is unisex and fits both left or right knees. The size is depends on the middle strap's length(17.12"), suitable for knee circumference under 17.12". Open knee design: Alleviate pressure and reduce knee-joint fatigue from intense exercises and heavy work. Reinforced Bilateral Dual Side Stabilizer to guide the patella in proper position and to stabilize ACL, PCL, LCL, and MCL ligament. Hassle Free Replacement or Full-refund within 12 MONTHS.