Size Chart: EURO 37-38= shoes length 25 cm=suit for the feet length 21-23.5cm EURO 39-40= shoes length 26cm=suit for the feet length 23-24.5cm EURO 41-42= shoes length 28cm= suit for the feet length 24-26.5cm EURO 43-44= shoes length 29cm= suit for the feet length 26-27.5cm More Reasons to Choose Our Slippers: 1. The newly developed natural material can perfectly adapt to your feet, provide you the whole day comfortable, nice traction on slippery floors. 2. super light house slipper, free your feet from the constraint of high heels and working shoes, have a good rest of feet when getting off work. 3. Lined with pure organic cotton, breathable,these super-soft scuffs literally let your feet breathe.