Currently some sizes will be switched to the Shock Doctor version until the backorder comes off . The item is identical to the McDavid.  LIGHTWEIGHT & LOW PROFILE - Semi-rigid lightweight + highly-supportive brace that helps with pain relief and support for various moderate to major instabilities and conditions. PERFORMANCE/PROTECTION - Advanced hinge design featuring over-molded integration of anatomical lateral/medial C-Supports for ultimate Body-In-Motion performance. RANGE OF MOTION - Brace has a fluid feel and natural range of motion via Bi-Lateral aluminum dual axis geared hinges. COMFORT - Features Self-Adaptive Flex-Fit shin and thigh pads with air-flow channels that wick away moisture and provide full adjustability and support. ADJUSTABLE - Anti-Migration Straps for adjustable precision fit.  Our strap system allows for exceptional adjustment range and structural support. RECOVER FASTER -  Can provide relief for injuries such as Hyper-Extended Knee, Dislocated Kneecap, ACL Injuries, MCL Injuries & more... UNISEX - Designed for both Men and Women. LEFT OR RIGHT - Anatomically specific for Right or Left Knee PATENT PENDING WASH & CARE: Hand wash cold. Air dry only INCLUDES COMPRESSION SLEEVE Comes included with a compression sleeve that fits under the brace.  Sleeve provides perfect combo of Sports medicine: support, comfort, fit, performance, and recovery. Sleeve features an Innovative Sleeve-Lock Fit™ System compression that wraps over brace exterior/straps adding support and fit. Brace can be worn with or without included compression sleeve Variety of sleeve options available that are exclusively compatible with Bio-Logix™ Knee Brace:  Patella Support Sleeve or Padded Sleeve CONTENT: BRACE: 45% ABS, 25% TPR, 15% Metal, 5% PA, 5% POM, 3% Nylon, 2% TPU BRACE PADS: 85% EVA + 11% Nylong + 4% Polyester SLEEVE CONTENT: 50% Nylon, 30% Polyester, 20% Spandex - exclusive of trims. Not made with natural rubber latex