These are kids' denim pants. The waist is elastic, and the button in the middle is decorative. There is no front zipper, so they are easy to put on and take off(^^) I bought them for my middle school son, but he outgrew them. They are not unused, but are in near-unused condition. I am listing two pairs together: one long pair and one half-length pair. If you buy just one, it's 800 yen. The fabric is slightly thinner and softer than adult denim, making them good for carrying around for changes of clothes, etc. We were fans of this series. ●Long pants inseam 67.5 cm Color... Navy Seasonality... Spring, Autumn, Summer. They can be worn in winter, but are warm when paired with leggings, etc.