These are Nike React HyperSet volleyball shoes, a model not released in Japan. There was a time when I wanted to play volleyball wearing different shoes, so I bought the Nike React HyperSet. The pink and blue soles were a favorite point of mine, but I ended up going back to Asics. I've only worn them twice, and they're in very good condition. I usually wear a 28.5cm in Nike, but since this is a narrow women's model, a 29.5cm was a perfect fit for me. This is a rare model that doesn't often appear on flea market sites, so if you've been looking for them, please consider purchasing them.