Lightly used Size 9 Iconic Crocs Comfort™ technology Croslite™ foam technology Flexible upper with ports Thermoplastic midsole Rubber/EVA outsole Croslite™ is a proprietary Closed Cell Resin material which is NOT plastic NOR rubber. Croslite™ material is closed-cell in nature and anti-microbial, which virtually eliminates odor. It is an extraordinary impact absorbing resin material developed for maximum cushioning.