AOSTA 7.0 OUTSOLE: High-density rubber compound outsole provides unsurpassed durability from heel-to-toe 180 PSC: A 180 degree thermal plastic Plantar Support Chassis that enhances mid-foot stability SURGELITE MIDSOLE: Lightweight, flexible, and durable cushioning technology for maximum comfort DURAWRAP FLEX UPPER: A durable, yet light material that provides protection and flex so there is no break-in period ORTHOLITE SOCK LINER: Keeps feet cool and minimizes the effects of perspiration. Color: white