14.5' X 19' ES Global 100 ct Poly Mailers, Shipping Mailing Envelopes Bags 2.5 Mil Thick 2.5 mil high quality self-sealing mailers, 3 layer co-extruded polyethylene film High strength seams allow over-stuffing water tear and puncture dirt resistant Pressure sensitive adhesive provides a high strength durable closure White outer surface & silver inner layer provides confidentiality Contain tear strip for quick and easy opening