50% Nylon / 50% Cotton Twill. Sewn to Military specifications. Six pockets, four with button flaps. Fused Pocket Flaps. Four-Button Fly. Double-Reinforced seat and knee. Adjustable waist tabs with 4 bar tacks. Drain Holes in bellows pockets. Nylon drawstring leg clousres, fused, knotted and tacked. Felled inseam, outseam, and seat seam.