The Invisa-Lite Shin / Ankle Combo Pad is constructed from a breathable neoprene with a deluxe lining for maximum comfort. Custom designed and articulated high durometer 3D impact foam keeps shins safe. They use a 4 way stretch ankle ‘sock’ paired with a medium durometer 3D impact foam to keep ankles protected. One size fits most with an open back design, paired with a heavy-duty adjustable hook and loop closure.