About this item Slightly Used. Size 7.5 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. A Hypoknit upper is designed to provide strategic areas of stretch and support Bootie upper construction hugs your foot for a snug, supportive fit Underfoot cushioning and flex zones informed by pressure mapping data Blown rubber outsole at the forefoot provides superior rebound