The Cyto Cell™ Knee Protection System is based on the same anatomically correct frame and intricate eight sphere hinge design found on our top of the line Ultra Cell.This sleek new brace features a fiberglass tibial plateau-capturing frame design, sleek adjustable compression control cuffs, a natural free-motion, rolling-gliding hinge, classic strap fastening, a one-piece fused patella cup, and the all-important anti-rotation tether. The Cyto Cell design maintains the philosophy and features we believe essential to a knee brace while also trying to take it easy on your wallet. * Cyto Knee Braces are sold Individually not as a pair. Check out this Video about the New CYTO CELL knee brace and difference between the CYTO CELL and the ULTRA CELL.