I received these from a relative who loves mountain climbing and the outdoors. They no longer fit. The nylon drawstring in the waistband is folded in half in the fabric in one spot. Right waist. My child wore these around the 6th grade. The area with the most wear is around where the drawstring comes out at the back of the waist. Quoted from the store: Style: 1105122 Product Description: These pants use a 1-way stretch fabric. Despite being thin, they have firmness and good breathability, providing a comfortable feel even during active scenes. They are lightweight and compact, making them very convenient as spare pants for activities like long-distance hiking. The fabric is treated with a super durable water-repellent finish that maintains its performance even after repeated washing. Material: 92% nylon + 8% polyurethane, ripstop (super durable water-repellent finish) Weight: 240g Suitable sizes (unit/cm): M (Height 150-160, Waist 62-69, Hips 85-93, Inseam 68-73) Outdoor Elementary School Student, Junior High School Student 150, 160 Thank you.