Quality Park 12 x 15-1/2 Jumbo Poly Mailers with Redi-Strip® Self-Sealing Closure - Catalog - 12" Width x 15 1/2" Length - Peel & Seal - Polypropylene - 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.