Used very lightly just once. Reinforced boot area, articulated knees and front heavier thigh and lower leg material over quick dry breathable upper area. Many pockets and places to store tools and gear as well as heavy reinforcement in the belt loops and an internal seam of elastic to keep the pants in place on the waist or a shirt tucked in. I wear 32 x32 and these are tight at 32 x 29. They fit smaller and I'd consider them a 30x29 in reality despite what the tag says. No dirt, smell or signs of use.