I purchased this last year at Shimamura. I believe it was a collaboration item with a model, though I don't remember who. It's made of warm material for winter. The lining is a pair of shorts. The waist measures approximately 33cm when laid flat, and the back is elastic. The total length is approximately 45cm. I only tried it on and have kept it in my closet for a year, but I don't think I'll have a chance to wear it, so I'm selling it. I will ship it via Yu-packet.