iSOUL A4 / A5 / A3 / A6 Board Backed Do Not Bend Envelopes — Pack of 20

iSOUL Board-Backed Do Not Bend Envelopes — Pack of 20

These 20 rigid-backed manila envelopes are ideal for offices, small businesses and regular senders who need a reliable supply without committing to a large bulk order. The stiff card back keeps letters, certificates and photographs flat in transit, and the pre-printed “Do Not Bend” instruction reduces the risk of damage by postal handlers.

Available sizes in this pack

• A3 / C3 — 457 × 324 mm
• A4 / C4 — 324 × 229 mm (fits an A4 sheet flat)
• A5 / C5 — 229 × 162 mm (fits an A4 sheet folded once)
• A6 / C6 — 149 × 105 mm

Each pack contains 20 envelopes of the size you select.

Features

• Rigid card back prevents bending and creasing in the post
• “Do Not Bend” pre-printed in the lower-left corner in red
• Peel & seal closure — quick and clean; no licking or separate adhesive needed
• Classic manila finish appropriate for business and personal use
• Plastic-free packaging

Suitable for

Contracts, payslips, invitations, greetings cards, certificates, artwork, photographs, cheques and any flat item that must not arrive folded or creased.

Pack contents

20 × manila hard board-backed do not bend envelopes (size of your choice)

Also available: 10-pack  |  50-pack (best value per envelope)

FAQs

Which size do I choose for sending an A4 document without folding it?
Select A4 / C4 (324 × 229 mm). This holds a full A4 sheet flat.

Which size is best for greeting cards or small photographs?
A5 / C5 (229 × 162 mm) fits a standard A5 greetings card or photograph neatly, and also qualifies as Royal Mail large letter format.

I need more than 20 — what are my options?
The 50-pack brings the cost per envelope down further and suits frequent or business use.