Usage and Indications: Moderate to severe sprains of the ACL, MCL, and LCL Resin Stays: Protects excessive lateral and medial movement without limiting range of motion Rear Mesh Fabric: Highly breathable material providing proper compression and a comfortable fit Personalized Fit: Semi-open front panel design enables adjustability on the lower leg X Strap & Parallel Straps: Limits forward movement of the knee while providing effective compression to accommodate leg movement