Quality Park 10 x 13 Poly Shipping Mailers with Self-Seal Closure - Catalog - #13 - 10" Width x 13" Length - Self-sealing - Polyethylene - 100 / Pack - White

Mailing envelopes feature white opaque, co-extruded polyethylene film for extra tear-resistant strength. Poly material is virtually waterproof. Envelopes feature double perforations for easy opening and tamper-evident, Redi-Strip adhesive closure.