White All-Board Envelopes – Strong Cardboard Mailers – Choose Size C3, C4, C5 – Made In UK

Got something to mail that needs a little more protection than a paper envelope?

These all-board envelopes are perfect.

They're made from strong, rigid cardboard in a clean white color.

You can choose the size you need—C3, C4, or C5—depending on what you're sending.

They're unbranded, so they're great for both personal and business use.

Perfect for photos, documents, small items, or anything you don't want bent.

They're brand new and made right here in the United Kingdom.

Keep a stash for when you need to ship something safely.