External labels, Side hammer loop Wide belt-loops Removable ID-pocket for flame retardant clothes Opening in back for fastening safety harness Robust hidden one-way metal zipper, Double zippers at the front for adjustable width Loose-hanging chest pockets with nail pockets, one with telephone pocket and one with pen pocket Front pockets with flap Flame retardant reflective tapes sewn with double seams Customized in any GSM Color combination & Sizes