These are heeled ballet flats from Repetto. I wore them once or twice, but they didn't fit, so I've been storing them. Heel height: Approximately 6cm Size: French size 37 (equivalent to 23.3cm) They might be a bit tight for someone who wears 23.5cm. The heel is thick, providing good stability. The soles have Vibram rubber, making them less slippery. There is a slight scratch on the inside of the right heel. (See the last photo) Comes with the box and shoe bag.