Fresh Foam X midsole foam with approximately 3% bio-based content delivers our most cushioned Fresh Foam experience for incredible comfort. Bio-based content is made from renewable resources to help reduce our carbon footprint; Structured yet breathable upper; Synthetic materials; 6 mm drop; due to variances created during the development and manufacturing processes, all references to 6 mm drop are approximate; Lace closure; Weight: 304 grams (10.7 oz)