Cumberland Packaging Envelope – Slip & Invoice Enclosure, 155 x 115mm, Box of 1,000

You know the one. The invoice that slips out of a too-big envelope and ends up in the recycling bin before the client even opens it. Or the delivery slip that's been folded three times because the envelope was the wrong size. These Cumberland packaging envelopes are cut at 155 x 115mm so your slips and invoices sit flat, stay put, and look like you actually care about the mailout. A box of 1,000 means you order once, stash it in the mail room, and stop thinking about it until next quarter. Ships from our warehouse as soon as your stock lands here – no six-day national-chain wait, no "back in three weeks." Add to cart and get your next mailout sorted before the printer even warms up

• 155 x 115mm – sized for standard slips and invoices without the crumple
• Box of 1,000 – one order covers a full quarter of regular mailouts
• Cumberland brand – consistent fold and finish across every envelope in the box
• Purpose-built for packaging slips, delivery notes, and invoice enclosures