Varsity Red Polyurethane upper Ventilation Ports Add Breathability And Help Water And Debris Drain Away. Fully Molded Croslite Material For Signature Crocs Comfort. Heel Strap Offers A Secure Fit. Easy To Clean, And Quick To Dry. Lightweight, Non-Marking Soles. Beach And Water-Friendly Features Of Crocs Classic Include Ventilation On Top And Around The Toebox To Drain Away Water And Debris Crocs Classic Clogs