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. We've 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. Size Guide: Sold as the US size marked on sole of the crocs. US Size UK Size EU Sizes Inches Millimeters M4 | W6 M3 | W4 36-37 8 5/8 221 M5 | W7 M4 | W5 37-38 9 229 M6 | W8 M5 | W6 38-39 9 3/8 238 M7 | W9 M6 | W7 39-40 9 5/8 246 M8 | W10 M7 | W8 41-42 10 255 M9 | W11 M8 | W9 42-43 10 3/8 263 M10 | W12 M9 | W10 43-44 10 7/8 272 11 10 45-46 11 280 12 11 46-47 11 3/8 288 13 12 48-49 11 5/8 297 14 13 49-50 12 305 15 14 50-51 12 3/8 314