Design: Durable and breathable engineered mesh upper Lace-up closure for a secure fit In-Shoe Comfort: Premium Achilles pillow for an elevated step-in feel Plush compression molded EVA midsole foam provides support and shock absorption Durability & Traction: Vibram(R) Megagrip outsole provides unparalleled grip on both wet and dry surfaces Updated underfoot lug pattern for extra confidence Additional Details: Approximate Weight: 10.2 oz / 289 g