poly mailers made by high quality plastic, tough and tear-proof. Provide outstanding storage and shipping protection against water, snow and rain. Good size for shipping bags for clothing Unsurpassed Water & Tear Resistance, heavy duty polyethylene White outer surface, grey inner lining 12″ x 15.5″ size, fits a wide variety of items, especially shipping for clothing. Pressure sensitive self-seal, Light Weight & Time Saving 100 pieces pack