Quarter Package: Lightweight sublimated basketweave nylon with thermoformed X-rib pattern Lining Material: Quick-dry Gripliner Ankle Support: Patented pro-integrated, anatomical heel/ankle support Ankle Padding: Lightweight Insta-form+ foam ankle pads Tongue Construction: Anatomical, 2-piece felt form-fit Footbed: Dry-grip moisture management Outsole: Perforated, full texallium composite Blade Holder and Runner Tuuk Lightspeed 2 with solid stainless steel runner