NIKE Men's Air Vapor Advantage Tennis Shoe Lightweight combination upper for a comfortable fit,Innovative lacing system for a custom fit and arch support Full-length Phylon midsole with encapsulated Air-Sole unit in the heel for lightweight cushioning and impact protection XDR rubber compound outsole with midfoot shank for durability and stability Herringbone pattern for durable traction on hard court surfaces Flex grooves let your foot move more naturally