iSOUL A4 C4 Board Backed Do Not Bend Envelopes — Pack of 25

iSOUL A4 Board Backed Do Not Bend Envelopes — Pack of 25

A practical mid-size pack of 25 A4 board-backed envelopes, well-suited to occasional business posting, small office use or anyone who needs a reliable stock of flat-mail envelopes without buying in bulk. The stiff card back and pre-printed “Do Not Bend” notice protect documents from being folded or bent by postal workers and delivery drivers.

Specifications

• Size: A4 / C4 — 324 × 229 mm
• Colour: Manila (classic brown)
• Closure: Peel & seal — no moisture or adhesive needed
• Printed: “Do Not Bend” pre-printed in the lower-left corner
• Material: Made from 100% recycled material; fully recyclable and biodegradable
• Quantity: 25 envelopes per pack

Features

• Rigid board back keeps A4 documents completely flat in the post
• Peel & seal strip for a fast, clean and secure closure
• Holds a full A4 sheet (210 × 297 mm) without folding
• Eco-friendly: 100% recycled, recyclable and biodegradable
• Plastic-free packaging

Suitable for

Posting certificates, legal documents, artwork, A4 photographs, invoices, payslips and greeting cards. Suitable for Royal Mail large letter format (subject to weight).

Pack contents

25 × A4 C4 (324 × 229 mm) manila hard board-backed do not bend envelopes

Also available: 20-pack  |  50-pack  |  125-pack

FAQs

Are these suitable for Royal Mail?
Yes — the A4 / C4 size (324 × 229 mm) qualifies as a large letter with Royal Mail, subject to the weight of your contents.

Are they truly 100% recycled?
That is the specification as listed on the product. If you need verified environmental certification for procurement purposes, please contact us and we can provide documentation.

Need a different quantity?
Also available as a 20-pack, 50-pack or 125-pack.