Crocs Specialist II Vent Clogs Unisex Navy W5/M4. Certifiably Comfortable™Do your shoes live up to your career specialty? Everything that makes Crocs so comfortable works overtime in these clogs from our Crocs At Work™ Collection, now featuring ventilating ports around the toe box to increase airflow and drain water or debris. Crocs has added thicker construction at the toe and metatarsal areas, increased arch support, and nubbed Croslite™ foam footbeds that soothe with every step. Specialist II Vent Clog Details: Ventilation ports around the toe box for drainage and breathability Pivoting heel straps for a secure fit Enhanced arch support, thicker metatarsal area, and contoured footbeds Higher heels meet workplace standards and protect feet Fully molded design makes them easy to clean with soap and water Iconic Crocs Comfort™: Lightweight. Flexible. 360-degree comfort.