Thank you for viewing. My daughter used these for about two years in gymnastics class. She seemed to like them because they were easy to move in. They're comfortable even when she sweats, and I think the material dries easily when washed. They're black, so they're easy to match with tops, and I think they can be used by both boys and girls. The waist string is not included. Also, there is some damage to the seams on the front and back. There is peeling of the print on the upper right back. Please check the photos and consider purchasing only if you can accept these conditions. We have no pets or smokers in the family. I have checked as carefully as possible, but there may be oversights. Please refrain from purchasing if you are concerned about minor details or do not understand the nature of used items. I will fold them up small for shipping. Please note that I may use recycled materials for packaging.