Ecco Half Leather Boots - Black Size: 4 UK size 4 is equivalent to 23cm in Japan, but it should fit someone who wears 23.5cm. Made with high-quality cowhide, they are easy to wear and warm. I purchased these new and unused on this site, but I have never worn them. However, there is a slight scuff on the heel, so I've listed them as "Like New." These have been stored at home. #Ecco #Boots