Quarter Package: Sublimated ultra-light Tech Mesh Lining Material: Hydrophobic Clarino synthetic leather Heel Support: Exterior heel wedge Ankle Support: Patented pro-integrated, anatomical heel/ankle support Ankle Padding: Lightweight Insta-form+ foam ankle pads Tongue Construction: Anatomical molded tongue with high-density metatarsal guard Footbed: Grip power channel construction Thermoformable: Full upper Outsole: Perforated, full composite Blade Holder and Runner: Tuuk Lightspeed 2 POWER with solid steel runner