I bought these last year, but I haven't worn them, so they're unused. The heel height is about 5-6cm. The size is 37, so they should fit someone who usually wears 23.5cm. Returns and refunds are not accepted. I will ship using the cheapest method. I am not responsible for postal accidents such as non-delivery or damage, so if you are concerned, I can add insurance for an extra 200 yen. Color: Black系 (Black-based) Heel Height: 5.1-7cm