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. Integrated rubber outsole offers enhanced underfoot comfort with every step N logo branding Adjustable lace closure for a customized fit 8 mm drop; due to variances created during the development and manufacturing processes, all references to 8 mm drop are approximate