Polyester slacks with an elastic waistband and drawstring for a comfortable fit. Great value set! No discounts. - Size: 160 - Colors: Black, Gray - Material: 100% Polyester - Design: Elastic waistband, drawstring - Features: With pockets Thank you for viewing. From Shimamura Used for 2-3 years. Black pants have a long scratch around the thigh area, see photo 18. Gray pants have light stains. See photos 8 and 10 (buttocks). The elastic waistband has almost no stretch. Please refrain from purchasing if you are concerned.