Size 38 I normally wear a 6.5-7 US and an 37 EU. This 38 EU fit me perfectly. Original chukka model without the cap toe. Shaft height: 3 ¼” (8.3 cm) Shaft circumference Size 35-38: 10” (25.5 cm) From the Sandgrens website: Clogs are made out of natural materials and therefore, are designed to fit differently than traditional shoes. Clogs are handmade so you may find variations in the grain of the wood or leather. These variations are normal and a testament to their Swedish handmade design. Clogs are supposed to “slip” when you walk, even if your clogs have a closed back. Nubuck leather will stretch slightly and form to customers’ feet during normal wear. Vegetable tan leather will initially feel stiff but will soften with continued wear.