Design: Vamp, collar and tongue mesh are 100% recycled polyester Lace-up closure for a secure fit In-Shoe Comfort: ENCAP midsole cushioning combines soft foam with a durable polyurethane rim to deliver all-day support Midsole foam uses approximately 3% bio-based content made from renewable sources to help reduce our carbon footprint Traction & Durability: Rubber outsole with 5% recycled rubber Additional Details: 11.5 oz. | 327.4 g