Bespoke Polythene Mailing Bags – UK Manufacturer

Elite Plastics manufactures bespoke polythene mailing bags for e‑commerce, retail and fulfilment operations across the UK. Produced to your exact size and specification, our mailing bags provide a strong, lightweight and cost‑effective solution for safely shipping products while presenting your brand professionally.

Manufactured in the UK with over 35 years’ experience in polythene packaging, we supply mailing bags to both high‑volume users and growing brands looking for consistent quality and reliable supply.

What Are Mailing Bags?

Mailing bags (also known as mailing sacks or postage bags) are lightweight polythene bags designed to protect goods during postal and courier delivery. They are commonly used for clothing, soft goods and boxed items, offering excellent tear resistance, moisture protection and low shipping weight.

All of our mailing bags are manufactured to order, allowing full control over size, thickness, colour and print.

Printed & Branded Mailing Bags

Printed and branded mailing bags are available, allowing you to showcase your logo, brand messaging or handling information directly on the bag. We offer high‑quality flexographic printing in up to 8 colours, suitable for both simple branding and more detailed designs.

Printed mailing bags are subject to minimum order quantities. Our team can advise on artwork setup, colour matching and the most cost‑effective print solution for your volumes.

Sizes, Thickness & Specification

Our mailing bags are manufactured to suit your exact requirements, including:

  • Bespoke widths and lengths

  • Standard or heavy‑duty thicknesses

  • Clear, white or coloured material

  • Self‑seal adhesive strips

  • Permanent or peel‑and‑seal closures

  • Opaque or see‑through options

We can manufacture mailing bags for both manual packing and automated packing and fulfilment lines, with specifications tailored to consistent feeding, sealing and throughput requirements.

Advanced Construction & Opacity Options

We also manufacture co-extruded (co-ex) mailing bags, where different layers serve different functions. A common option is a white outer layer with a black inner layer, ensuring full opacity to protect contents and prevent show-through during transit.

Co-ex constructions can improve appearance, strength and confidentiality while maintaining efficient material usage.

Sustainability & Material Options

Where suitable, mailing bags can be manufactured using recycled polythene, carbon-neutral or carbon-negative sugarcane-based materials, or alternative lower-carbon options. Sugarcane-based mailing bags are produced from renewable feedstocks and remain fully recyclable as LDPE (resin code 4), allowing them to enter existing recycling streams. Regarding recycled polythene or alternative lower‑carbon material options. As a manufacturer with in‑house recycling capability, we can advise on sustainable solutions that balance durability, appearance and environmental impact.

Like‑for‑Like Quotations

If you already purchase mailing bags and have an existing specification, we can quote like‑for‑like against your current product. Simply provide your bag dimensions, thickness, material type, print details and annual usage, and we’ll assess whether we can supply an equivalent or improved solution.

Why Choose Elite Plastics?

  • UK‑based manufacturer

  • Bespoke sizes and specifications

  • High‑quality printing capability

  • Consistent supply for high‑volume users

  • Technical support and material expertise

  • Competitive pricing and reliable lead times

Frequently Asked Questions

Are mailing bags waterproof?

Yes. Polythene mailing bags provide excellent protection against moisture and rain during transit.

Can mailing bags be recycled?

Yes. Polythene mailing bags are recyclable, and recycled‑content options are available depending on application requirements.

Do you supply mailing bags in bulk quantities?

Yes. We specialise in supplying mailing bags in bulk volumes and can tailor specifications to optimise cost and performance.

Do you offer dual-seal mailing bags for returns?

Yes. We manufacture dual-seal mailing bags with a secondary adhesive strip, allowing customers to reseal the bag for returns while maintaining a clean, professional appearance.

Can you match my existing mailing bag?

Yes. We regularly quote like‑for‑like against existing mailing bag specifications and can advise on equivalent or improved options.

Enquire About Mailing Bags

If you would like a quotation or advice on mailing bags, please contact our sales team. We’ll be happy to review your requirements and recommend the most suitable solution.

We Can Provide A Competitive Quotation Fill In The Enquiry Form On The Right Or Get In Touch >