Inner sleeve features a formfitting hourglass design and exclusive moisture-wicking HydraCinn fabric. Permanently bonded antimicrobial barrier provides protection against odor causing bacteria, fungus, and other microorganisms. Anti-slip inner grip strips help prevent brace migration. Flexible steel springs support both sides of knee, yet allow leg flexion and extension. Upper strapping system and tibial containment system provide superior support. Extremely soft to the touch and lightweight for ultimate comfort. Free nylon mesh laundry bag shields clothing from hook and loop straps in gym bag or washing machine.