Cumberland Strip Seal Pocket Envelope – B4 (353 x 250mm) 100gsm White

You've got a contract, an invoice, or a letter that actually matters, and the last envelope you grabbed tore at the seal or looked like it was pulled off a junk-mail pile. This one won't do that. Cumberland's B4 strip seal pocket envelope is 100gsm — thick enough to survive a rough postal run without creasing or splitting. The pocket keeps your documents from sliding out mid-transit, and the strip seal closes clean with no residue showing. White, 353 x 250mm. Drop in your A4 sheets, fold, seal, post. Done

• 100gsm weight resists tearing and creasing in transit
• B4 size (353 x 250mm) fits standard A4 documents with room to spare
• Pocket design keeps contents from shifting or falling out
• Strip seal closes flush — no glue mess, no visible adhesive
• Clean white finish suits professional correspondence and personal mail alike