Blake Premium Secure Gusset Pocket Peel and Seal White 406x305x50mm 125gsm (Pack 100)

White, 16x12 Inch 406x305x50mm, Non Window, Peel and Seal, Pack 100, 125 GSM, Gusset, Blue Hatch Security Opaque, Tear Resistant This range carries the impressive title 'one of the strongest envelopes in the world' and with good reason. Its tear resistant paper substrate will resist tearing under the strongest of hands and if your contents matter to you this has to be the product for you. Unique to Blake, a paper envelope that is tear resistant, water impermeable, burst resistant, grease proof and fully overprintable.