EU 39 fits US 8.5–9 (Dansko recommends sizing up if between sizes) The Professional clog is the iconic Dansko silhouette, the flagship style. It features a roomy reinforced toe box for protection and comfort. The contoured footbed adds support to the comfort features like a padded instep collar to feel good with virtually any foot. Dansko sets themselves apart with a protective heel counter that allows the heel to move up and down freely while providing lateral stability, and the anti-fatigue rocker bottom, which is built to keep you moving forward