adidas Performance Men's Adizero Afterburner Baseball Shoe 100% Synthetic Imported Synthetic sole Weight: 9.8 ounces (size 9) synthetic nubuck upper for lightweight comfort Sprint web frame provides lockdown no-sew toe cap for abrasion resistance Ventilation windows increase breathability; anchored padded tongue for snug fit Molded polyurethane sock liner for long-lasting comfort The sprint frame construction uses geometrical research to offer the perfect balance between light weight and stability