This is the Esaki Spiral. Purchased in the summer, it was used once in a match (one game) and once for practice (about 30 minutes). It still has a faint new smell. The men size is 69 (men tare length is 21). The tare is L size, custom-made. The tare strings are thin. Both the fuchi and men-gane are very clean. To be honest, this is a good piece of equipment, as it's been a hot topic this year. I felt that a lot of thought went into its construction. The futon has a moderate thickness and softness, suitable for both practice and matches. It was better than I expected, so I couldn't find a use for it. I decided to sell it so someone else could use it and spread the word, rather than just storing it. Please only purchase if you are satisfied with the photos and description. The men himo and chigawa that came with it will be included.