Design: Mesh and 3D-printed TPU upper Bellows tongue keeps out debris Traditional lace closure In-Shoe Comfort: Breathable mesh lining Molded nylon arch shank Kinetic Fit(TM) BASE removable contoured insole provides flexible support Merrell(R) Air Cushion in the heel absorbs shock and adds stability Lightweight EVA foam midsole with zones of softer foam may reduce pronation Durability & Traction: Vibram® TC5+ rubber sole for traction, even when it's wet 3.5mm lug depth Additional Details: Vegan-friendly Weight: 1 lb 2 oz / 516 g