Progo 100 ct 14.5x19 Large Size Self-seal Poly Mailers. Tear-proof, Water-resistant and Postage-saving Lightweight Plastic Shipping Envelopes / Bags 14.5 x 19. Unsurpassed Water & Tear Resistance, heavy duty polyethylene White outer surface, gray inner lining 14.5" x 19" large size, fits a wide variety of items Pressure sensitive self-seal, Light Weight & Time Saving 100 pieces pack