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Mailing Bags
The practical dispatch solution for e-commerce, retail and fulfilment. Mailing bags are lightweight, tear-resistant polythene bags with a permanent self-seal strip, designed to protect goods in transit while keeping postage costs low. Available in a wide range of sizes from small letter formats up to large parcel dimensions, in white, grey and coloured options.
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More About "Mailing Bags"
Mailing Bags feature a strong poly exterior with self-seal closure, combining practical protection with standout presentation. Designed for general e-commerce, clothing, documents, they protect a wide range of e-commerce goods throughout transit while delivering a more considered delivery experience than a plain white or kraft mailer.
Available across over 10 size options — 230 x 115mm, 160 x 120mm, 230 x 162mm, 300 x 190mm, 305 x 230mm, 330 x 250mm and more — all with peel & seal closure for fast, reliable dispatch.
Benefits of Mailing Bags
- Strong exterior — strong poly exterior with self-seal closure for protective yet distinctive packaging.
- Peel & seal closure — permanent self-adhesive strip for fast, consistent dispatch without extra equipment.
- Waterproof — laminate exterior protects contents from moisture and light impact throughout transit.
- Lightweight — significantly lighter than rigid box alternatives, keeping postage within large letter or small parcel thresholds where size allows.
- Size range — over 10 sizes from compact through to large, to match your product dimensions.
- Colour options — available in 3 colours including Clear, Manila, White.
Frequently Asked Questions
What sizes do mailing bags come in?
Available in over 10 sizes: 230 x 115mm, 160 x 120mm, 230 x 162mm, 300 x 190mm, 305 x 230mm, 330 x 250mm, 353 x 250mm, 410 x 260mm and more. Always check the internal (usable) dimensions on each product page — external sizes are larger than the usable area. Allow approximately 20–30mm extra on each dimension compared to your product's flat size.
Are mailing bags Royal Mail compatible?
Lighter items in smaller sizes may qualify as large letter (maximum 25mm depth, under 100g including mailer weight). Most packed mailing bags will fall into Royal Mail's small parcel category. Always weigh the packed item as the mailer itself contributes to both weight and thickness.
Are mailing bags waterproof?
Yes — the laminate exterior provides a waterproof barrier throughout transit. The peel & seal adhesive strip creates a reliable closure that holds in normal handling conditions.
What colours are mailing bags available in?
Available in 3 colours: Clear, Manila, White. Choosing a colour that matches your brand palette turns every delivery into a branded touchpoint.
What Our Customers Say
See why we’re trusted as by thousands of UK businesses for packaging and envelopes through verified customer reviews.
Read more reviews at Trustpilot
Aimée Thompson
We ordered some branded envelopes for a client event and they were a perfect addition. Jess and the team were extremely accommodating and attentive throughout the ordering process, pushing our order through to meet the tight deadline. I really recommend this company for branded materials. Thank you team!
Charlotte Goodman-Brooks
Unfortunately my order arrived damaged but after emailing the issue over to the company I received a quick response from Jess who was able to fix the problem in minutes, thanks so much jess, fantastic customer service, will definitely be ordering from this company again.
SR
DPD were having issues delivering to my address and things were getting frustrating, but the company really stepped up. They sorted the problems with DPD quickly, the replacement arrived super fast, and they refunded my previous order without any hassle. Overall, I’m really impressed – amazing customer service, and I’ll definitely be ordering again!
Grace
The courier let us down, but Jess and Kelly were hugely helpful and did everything they could to resolve it. They even arranged to specially stock products I order regularly to make future orders smoother. Great quality, good value and excellent customer service, with the phone answered on the first ring!
Rebecca R
Really easy process to order some custom printed envelopes, James was so helpful and answered all my questions. The envelopes arrived on time and are really great quality, wouldn't hesitate to use this company again!
Bernie Webber
Great company to buy from. Very helpful and communicative.
Paul Craig
Very helpful staff directing me to exactly the right item needed.
Richard
Fantastic Customer Service


