Not sure what is the right shoe size for you? The following instructions will help you choose. 1.Prepare: paper, pen/pencil, ruler. 2. Place the paper on the floor, edge against the wall. 3. Stand with your heels touching the wall and your weight evenly on both feet. 4. Mark the tip of your longest toe - get help for better accuracy. 5. Measure the distance from the wall to the mark. 6. Add 3-5 mm for comfort. 7. Match the final measurement to our size chart. Tips: Our sizing moves in 5 mm increments - If your foot measures 23.0 cm, select 23.5 cm for a more comfortable fit.Some styles feature a narrower, pointed silhouette. If you prefer additional toe room, we recommend selecting one size up. Save your measurement on your phone for future reference.