Material: Denim Season: Spring, Summer, Autumn, Winter These were purchased several years ago and worn by my child. They were used on days off and not very often. The size is 2 years, and I think they can be worn from around the age of 1 when they start walking, with the cuffs folded up. It was cute to coordinate outfits with my child. Because they are denim, the fabric is sturdy and great for the park. The waist can be adjusted with elastic and buttons. They have a hook closure and a zipper, making them authentic denim. They have stretch.