KOW sizes cover 2 regular European shoesizes;The slippers should be slightly tight in the beginning and will shape to your feet for maximum comfort.
KOW slippers can occasionally be machine-washed using a cold wool program. Dry flat to maintain shape. Regular machine washing is discouraged as it will cause pill and increase the risk of shrinkage.
EUR 36-37 / UK 3,5-4,5 / 23cm
EUR 38-39 / UK 5-6 / 24cm
EUR 40-41 / UK 6,5-7,5 / 25cm
EUR 41-42 / UK 8-9 / 26 cm
Not sure about your size? Draw the shape of your feet on a piece of paper and measure the length.