Upper Features: Quarter Package Sublimated tech nylon with thermoformed X-rib pattern Lining Material Hydrophobic microfiber Heel Support Patented integrated, anatomical heel/ankle support Ankle Padding Anaform foam ankle pads Tongue Construction Anatomical, 2-piece 40 oz. felt, with metatarsal padding Footbed Molded with integrated heel support Lower Features: Outsole Lightweight, Pro-8 beveled TPU Blade Holder TUUK LIGHTSPEED EDGE Runner TUUK super stainless steel runner