All SCARPA footwear uses Europeansizing, except for the skiing boots.
• 1 Euro whole size = 6.6 mm = 0.26 inches
• 1 US whole size = 8.4 mm = 0.33 inches
• Euro sizes provide a better, more precise fit for your intended use
Upsize (½ sizes) depending on desired fit for mountaineering boots.
For climbing shoes, the choice of downsizing (1 size) depends on the desired fit. In other shoes, you need a gap between the toes and the front of the toe box, which is necessary for walking. In climbing shoes, it is preferable to eliminate gaps, to increase sensitivity and precision when climbing.
Please refer to "Scarpa Climbing Collection Structure" for more information.