Designed as a vertical assault weapon, the Danner Flight Assault (DFA) features low oil content nubuc leather, a lightweight 1000 Denier nylon upper, a hexagonal low lug outsole with a patent pending Vertical Insertion Arrestor (VIA) technology insert which provides abrasion resistance and superior control in fast roping applications. 100% waterproof and breathable. Durable, low oil Nubuc leather designed for the demands of fast roping combined with rugged 1000 Denier nylon upper for lightweight comfort and mobility.