The Merrell Women's Siren Traveller 3 are made with Vibram soles, which are high performance rubber soles with unmatched durability, stability and slip resistance.·       Full grain leather upper·       Traditional lace closure·       Bellows tongue keeps out debris·       Breathable mesh lining·       Kinetic Fit BASE removable contoured insole for flexible support·       Merrell Air Cushion in the heel absorbs shock and adds stability·       Lightweight EVA foam midsole with zones of softer foam may reduce pronation·       Vibram TC5+ rubber sole·       Weight: 1lb 7oz / 640G (full pair)