POLY MAILERS. NEW. SIZE: 7 1/2" x 10 1/2" --SELF-SEAL CLOSURE ON ONE END. 1.5 INCH FLAP ADHESIVE TAPE CLOSURE. --HIGH QUALITY-STRONG & DURABLE. --WATERPROOF. --OUTER SURFACE OF THE MAILER IS GRAY AND INNER LINING IS BLACK. --CONSTRUCTED FROM 2 MIL THREE LAYER CO-EXTRUDED POLYETHYLENE FILM. ALL POLY MAILERS ARE NEW.