White Polyethylene Shipping Mailers

Product Code: PWH450525 ISBN: 8435605321762

From £0.29 (inc vat)

Made From 60 Micron Material

Can Be Branded

Peel and Seal Closure

Ecommerce Essential

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Size Guide

Here’s a handy list of the most common C sizes and how they relate to A paper sizing.

Please note that all our product sizing refers to the is internal measurement of the envelope.

C Name	Size (mm)	Paper Size
C0	917 x 1297	A0
C1	648 x 917	A1
C2	458 x 648	A2
C3	324 x 458	A3
C4	229 x 324	A4, A3 folded in half
C5	162 x 229	A5, A4 folded in half
C6	114 x 162	A6, A4 folded in four parts
C7	81 x 113	A7, A5 folded in four parts
C8	57 x 81	A8
C9	40 x 57	A9
C10	28 x 40	A10

Still Need Help? Read our comprehensive guide to envelope sizes, closures and the types of envelopes you can buy.

Your Complete Guide to Envelope Sizes, Types & Closures

Alternatively get in touch with one of the team at sales@postalpackaging.com and we'll be happy to help.

Custom Printing Available > Personalised Designs with Fast Turnaround

White polyethylene shipping mailers are lightweight, durable, and tear-resistant envelopes designed for safely shipping non-fragile items like clothing, accessories, and documents. Made from polyethylene, they provide protection against moisture, dust, and tampering, making them ideal for e-commerce businesses. These mailers often feature a self-sealing adhesive strip, which allows for quick and secure packaging without the need for additional tape.

Their smooth, writable surface also supports easy labeling or printing, and they come in various thicknesses. Depending on the level of protection needed. Poly mailers are favored for their efficiency in reducing shipping costs due to their lightweight nature while still providing reliable protection for goods in transit

White Polyethylene Shipping Mailers

From £0.29

Hear from Our Customers

See why we’re trusted as the UK’s go-to for packaging and envelopes from verified Trustpilot reviews.

Gillian D

Site was really easy to use, even for a small order. My boxes arrived quickly, were very well packaged, and easy to construct. Absolutely delighted!

Valentine

Had to swap envelope types and support sorted it all the same day. Delivery was quick too. Great experience — would recommend.

Richard

Was unsure how to assemble my cartons, and they sent me a personalised video tutorial. Exceptional support!

Emma Mills-Green

Brilliant customer service and the biodegradable bags are excellent quality. Super speedy delivery too. Highly recommended!

Leanne

There was a misunderstanding with my order, but the team resolved it quickly and professionally. Very happy with the service!

Read all reviews on Trustpilot

Who Are Postal Packaging?

At Postal Packaging, we're all about providing sustainable, top-quality packaging solutions for businesses of every size. With over 20 years of experience combined and a deep understanding of the industry, our team
is here to offer you the best service possible in the UK, running on coffee, yoga poses, and a 90s dance playlist!

Our journey began with four determined women who shared a vision. With our experience in the packaging industry, we decided it was time to venture out on our own. Starting with just six team members, we were small but mighty. We rolled up our sleeves and learned to drive forklifts, built muscles from unloading countless containers, and became experts with a mallet while constructing our shelving. We started off selling on eBay from one of our homes, and soon enough, we moved into our very own warehouse.

Read Our Full Story

White Polyethylene Shipping Mailers

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White Polyethylene Shipping Mailers

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Who Are Postal Packaging?

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Customer Service

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