Class 3: High Support Allowing excellent warmth & compression on the knee region — Easy & simple wear by Full Open Wrap Style. Useful for protecting weakened muscles & preventing sports injuries. Collateral Polycentric articulated Hinges for lateral reinforcements & Stability during knee movement. Anatomical Viscoelastic Opening Pads on lateral patella for additional compression & Stabilization. Adjustable compression by Upper & Lower Double Velcro Straps. Dr. Med Hinged Knee Brace with Open Patella allows excellent warmth & compression on the knee region. Easy & simple Full Open Wrap for full long usage. The Collateral Polycentric articulated Hinges support lateral reinforcements & Stability during knee movement. Anatomical Viscoelastic Opening Pads on the lateral patella provide additional compression & Stabilization to improve blood circulation and reduce swelling. The open patella design relieves pressure on the kneecap for perfect movement. Material: Polyester, Nylon, Neoprene, Aluminum, POM, Polyurethane INDICATION - Proprioception of the Knee - Sprain & Strain on the Knee Ligament - Patellar Syndromes & Tendon disease - Knee Instability & Laxity - Knee arthrosis & arthritis - Osteoarthritis (Degenerative Joint Disease) - Knee Slight Injurie, Traumas & contusions - Post Operative & Post-Surgical treatment of the knee Please note: For accurate sizing, please refer to the size chart in the product gallery. The Additional Info section provides the box measurements.