Men's running shoes; California Slip Lasting: Upper is stitched directly attached to the midsole; Solyte® Midsole Material: A lighter weight midsole compound than standard EVA and SpEVA®; Removable Sockliner: EVA sockliner moulded to the shape of the foot; FluidAxis: Anatomically correct deep flex grooves have been aligned to the joints of the foot; AHAR+: New blown AHAR outsole material enhances cushioning and durability; Materials: Upper: Synthetic, Insole: Synthetic, Outsole: Synthetic; Expertly designed, and crafted from top-notch materials, these running shoes are perfect for neutral runners of all abilities.