These green foil envelopes stand out with their gorgeous metallic green finish, perfect for advertising your brand, for posting promotions, and mailing goods at Christmas or indeed for any special occasion. They are highly protective and tough, with a bubblewrap interior, and resist punctures and water, just as robust as a traditional postal bag. Use our green bubble envelopes to add fun and creativity to A4 size packages. They are Royal Mail large letter size and have a secure a peel and seal feature. Our packs contain 25 green envelopes sized 324 x 230mm.