Propper BDUs are sewn to military specification MIL-T-44047E and feature six pockets, four of which with button flaps. Both seat and knee are double-reinforced and this trouser also has felled inseam, outseam and seat seam. Other features include fused pocket flaps, a four-button fly, adjustable waist tabs with four bar-tacks and drain holes in the bellows pockets. The Nylon drawstring leg closures are fused knotted and tacked. Tactical uniform fabrics must be comfortable, durable and have excellent color integrity. Battle Rip is an all-season weight, 65% Polyester / 35% Cotton Ripstop. Battle Rip is Propper's fabric of choice for the public safety community.