U-Shaped Hinged Knee Supports, Black Features Four-way stretch, 1/8 neoprene that gives uniform compression Removable U-Buttress can be positioned in the superior or inferior position Medial and lateral heavy-duty hinges for a high level of stability Unique soft-seam construction is smooth to reduce irritation caused by conventional methods of seaming Two circumferential straps with loop lock closures help limit migration and control the patella. Specifications COLOR Black SIZE 2X-Large, 3X-Large, 4X-Large, Large, Medium, Small, X-Large, X-Small BRAND Curad LATEX FREE Yes Length Inches 10.250 IN MATERIAL Neoprene Max Circumference 13.00 IN, 14.00 IN, 15.00 IN, 16.00 IN, 18.00 IN, 20.00 IN, 22.00 IN, 24.00 IN Min Circumference 12.00 IN, 13.00 IN, 14.00 IN, 15.00 IN, 16.00 IN, 18.00 IN, 20.00 IN, 22.00 IN Open or Closed Patella Open Removable Buttress Yes Stays Hinged Medial Lateral, Spiral Medial Lateral Strap Style or Includes Straps 2 Hook Loop Closure