Dickies Mens LP856 Industrial Double Knee Pant CHARCOAL 28W x UU StayDark technology, enhanced durability. Permanent press post-cure finish. Metal tack button waist closure. Wider, stronger belt loops. Reinforced front pockets. Double knee panels. Extra pocket on leg. Reinfoced crotch and seat seams. 7 3/4 oz. Vat Dyed Twill, 65% Polyester, 35% Cotton.