---
product_id: 454042088
title: "50 Pack A5 Board Backed Envelopes"
brand: "postmaster"
price: "€ 54.33"
currency: EUR
in_stock: null
reviews_count: 8
category: "Postmaster"
url: https://www.desertcart.es/products/454042088-50-pack-a5-board-backed-envelopes
store_origin: ES
region: Spain
---

# 229 x 162 mm perfect A5/C5 fit Peel & seal self-closure for secure mailing Rigid board backing for max protection 50 Pack A5 Board Backed Envelopes

**Brand:** postmaster
**Price:** € 54.33
**Availability:** ❌ Out of Stock

## Summary

> 📬 Send with confidence, arrive with impact.

## Quick Answers

- **What is this?** 50 Pack A5 Board Backed Envelopes by postmaster
- **How much does it cost?** € 54.33 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/454042088-50-pack-a5-board-backed-envelopes)

## Best For

- postmaster enthusiasts

## Why This Product

- Trusted postmaster brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Security:** Peel seal closure locks in contents quickly without fuss or extra tape.
- • **Perfect Postage Fit:** Sized to fit A4 folded or A5 sheets, optimized for single 1st/2nd class stamp mailing.
- • **Eco-Conscious Choice:** PEFC-certified materials support sustainable forestry—mail with a green conscience.
- • **Flat & Flawless Delivery:** Hard board backing ensures your documents arrive crease-free and pristine.
- • **Trusted by Professionals:** Preferred by top UK organizations and savvy home businesses alike for reliable document dispatch.

## Overview

Postmaster A5 C5 Do Not Bend Board Back Envelopes (50 pack) combine rigid cardstock backing with a secure peel seal closure, perfectly sized for A5 and folded A4 documents. Designed to prevent bending during transit, these brown envelopes are PEFC-certified for sustainability and trusted by major UK organizations for safe, professional mailing.

## Description

Postmaster A5 C5 Do Not Bend Board Back Envelopes 229 x 162 mm Peel Seal 50 Pack, Brown : desertcart.co.uk: Stationery & Office Supplies

Review: Does exactly what it says, strong and reliable - These board back envelopes are exactly what you want if you need to post documents safely. They are sturdy, keep contents flat, and do a good job of preventing bends during transit. The board backing is strong enough to protect papers without being overly thick or bulky. They are easy to seal, the sizing is accurate, and they feel well made overall. I have used them for posting important documents and they have arrived in good condition. If you need reliable envelopes that do what they are meant to do, these are a solid choice. Great value and no complaints.
Review: Good Quality and Value - Perfect size for "small letter" sized postage items (as long as the contents are light enough for the package to remain in that category). Sturdy, would recommend.

## Features

- HARD BOARD-BACKED PROTECTION - Essential for Important Documents such as legal papers, photographs, certificates, passports
- C5 ENVELOPE - Designed to take sheets of A4 Paper folded in half, or sheets of A5 paper unfolded. Designed to be sent using a single 1st Class or 2nd Class Stamp (max 100g)
- DO NOT BEND - written clearly on the Envelope to help ensure your mail gets couriered through the postal system without being folded or damaged
- PEFC-CERTIFIED FOR SUSTAINABILITY - PEFC is a European based Forest certification system, that allows small- and family forest owners to demonstrate their excellence in sustainable forest management
- POSTMASTER - we manufacture millions of Envelopes for some of Britain's biggest Organisations as well as for thousands of small, home based businesses

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B2PX3XDQ |
| Best Sellers Rank | 604 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 10 in Envelopes |
| Brand | Postmaster |
| Brand Name | Postmaster |
| Closure Type | Self-Seal |
| Closure type | Self-Seal |
| Colour | Hardback A5 |
| Country Of Origin | Poland |
| Customer Reviews | 4.6 out of 5 stars 844 Reviews |
| Item Dimensions L x W | 22.9L x 16.2W centimetres |
| Item Shape | Rectangular |
| Item height | 0.5 millimetres |
| Manufacturer | Bong |
| Material | Cardstock |
| Material Type | Cardstock |
| Number of Items | 50 |
| Number of items | 50 |
| Occasion | Formal |
| Occasion Type | Anytime, Business, Formal |
| Recommended Uses For Product | Photos, post |
| Size | Board Backed |
| Special Features | Self Seal |
| Style | A5 |
| Unit Count | 50.0 count |

## Product Details

- **Brand:** Postmaster
- **Closure type:** Self-Seal
- **Colour:** Hardback A5
- **Material:** Cardstock
- **Occasion:** Formal

## Images

![50 Pack A5 Board Backed Envelopes - Image 1](https://m.media-amazon.com/images/I/61M6Cv2Ts3L.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does exactly what it says, strong and reliable
*by D***B on 26 December 2025*

These board back envelopes are exactly what you want if you need to post documents safely. They are sturdy, keep contents flat, and do a good job of preventing bends during transit. The board backing is strong enough to protect papers without being overly thick or bulky. They are easy to seal, the sizing is accurate, and they feel well made overall. I have used them for posting important documents and they have arrived in good condition. If you need reliable envelopes that do what they are meant to do, these are a solid choice. Great value and no complaints.

### ⭐⭐⭐⭐⭐ Good Quality and Value
*by E***3 on 9 January 2026*

Perfect size for "small letter" sized postage items (as long as the contents are light enough for the package to remain in that category). Sturdy, would recommend.

### ⭐⭐⭐⭐⭐ Send items with ease of mind
*by C***E on 20 May 2025*

I’ve been using C5 cardboard envelopes for a few months now, and they’ve quickly become my go-to choice for mailing documents, photos, and small prints. The quality is outstanding — the cardboard is sturdy and gives a reassuring level of protection during transit. I’ve never had issues with bending or creasing, even when sending more delicate items. The size is just right for A5 documents or folded A4 sheets, making them super versatile for both personal and professional use. The self-seal adhesive strip is strong and secure, saving me time and hassle. Overall, these envelopes are reliable, professional-looking, and worth every penny. Highly recommended for anyone who wants peace of mind when sending important items

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.es/products/454042088-50-pack-a5-board-backed-envelopes](https://www.desertcart.es/products/454042088-50-pack-a5-board-backed-envelopes)

---

*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-22*