Polythene Envelopes

Shop polythene envelopes for secure, lightweight and waterproof mailing at The Green Office. Also known as poly mailers or mailing bags, these envelopes are designed to protect contents from moisture, dirt and damage during transit, making them ideal for e-commerce, offices and retail use.

Polythene envelopes are made from durable plastic materials that offer strong resistance to tearing while remaining flexible and easy to handle.

Waterproof mailing bags for reliable protection

Polythene envelopes provide excellent protection against moisture and environmental factors, helping keep contents dry during delivery. This makes them particularly useful for shipping items that need to remain protected from rain or damp conditions.

Their waterproof design makes them a popular choice for sending clothing, documents and packaged goods through the post.

Lightweight and cost-effective packaging

One of the key advantages of polythene mailing bags is their lightweight construction, which helps reduce postage costs while maintaining durability. Their flexible design allows them to accommodate items of different shapes and sizes without adding unnecessary bulk. 

This makes them an efficient solution for businesses handling high volumes of shipments.

Strong, tear-resistant and secure

Polythene envelopes are designed to be tough and resistant to tearing, helping protect items from damage during transit. Many feature peel-and-seal adhesive strips that create a secure closure and can reveal tampering if opened. 

This combination of strength and security makes them suitable for both everyday and high-volume mailing applications.

Ideal for e-commerce, retail and office use

Polythene envelopes are widely used in e-commerce and retail for shipping products such as clothing, accessories and soft goods. They are also suitable for sending documents, catalogues and promotional materials.

For more protective mailing options, you can also explore our padded bags for fragile items or board backed envelopes for rigid document protection.

Available in a range of sizes, colours and formats

Our range includes polythene envelopes in multiple sizes to suit different mailing needs, from small document bags to large mailing sacks. Options include opaque, coloured and clear finishes, as well as versions with labelling panels for easy identification.

Choosing the right size ensures items fit securely without excess movement during transit.

Eco-friendly mailing bag options

Many modern polythene envelopes are available with recycled content or recyclable materials, helping reduce environmental impact. Some options are designed to be reused, supporting more sustainable packaging practices.

Looking for eco-friendly options? Read our guide to recommended recycled envelopes to choose the right sustainable mailing solution.

Why choose polythene envelopes from The Green Office?

• Waterproof protection for mailing and shipping
• Lightweight design to reduce postage costs
• Strong and tear-resistant materials
• Secure peel-and-seal closures
• Available in multiple sizes and formats

Browse our full range of polythene envelopes and find reliable, cost-effective solutions for secure mailing and packaging.