200(100+100) POLY MAILERS ENVELOPES 9''x12'' SELF SEALING PLASTIC SHIPPING MAILING BAGS -ENVELOPES POLYBAG (SHIPPING BAGS) Poly Mailer is designed to provide maximum protection and has excellent puncture resistance. Color: White-conceals packages from visibility. Made from premium polyethylene-which enables easy label, stamp and ink application. Plain exterior-ideal for logo/brand printing and marketing.