Durango Mens Rebel Waterproof Western Boot DDB0361Durango Suspension System D. S. S All day comfort, flexibility and durability is guaranteed with the Durango Suspension System. Four key components are engineered together to create a lightweight design that consists of with a two layer innersole, shank, shock absorbing EVA midsole and a high abrasion rubber outsole with a rolled shank area and rocker heel. Square toe Full grain leather Cushion Flex insole Rolled shank area 1 1 2" Rocker heel