Knee: Single-density base layer, PE (plastic) cap Shin Shell: Plastic exterior shell w/ bridge support (ridges) Calf: Single-density base layer w/ extended single-density foam calf wrap Dome Cap/Knee Wing: N/A Straps: 2-piece strapping system - wrap lock strap around knee, elastic calf strap Liner: Brushed Nylon lining w/ comfort padding Thigh Guard: Single-density thigh guard