These are khaki jersey pants. The tag is faded, but I can read: Waist: 69-77 cm Inseam: 70 cm Outer fabric: 88% polyester, 12% polyurethane Lining: 100% polyester It appears to be from Senshukai. Mesh lining only in the crotch area. There are four pockets: two on the sides and two in the back. The hems can be tightened with elastic. The knees have tucks. The material is smooth and thin.