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Poly Mailers

Poly mailers are lightweight, waterproof plastic mailing bags ideal for shipping non-fragile goods. Made from durable polythene film, these bags offer a secure and cost-effective packaging choice. Packhelp supplies a full range of mailing bags for businesses across the UK.

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Mailing Bags
Poly Mailers

Customisation

Any
Custom
Pre-printed
Plain

Industry

Any
E-commerce
Logistics & Fulfilment
HR
Home & Décor
Marketing & PR
Events

Material Colour

White
Black
Grey

Sustainability

Eco Choice
Biodegradable material
Reusable
Recyclable
Recycled content

Collections

Custom promo
Bestsellers

Use case

Return friendly
Clothes
Christmas
Events
Vinted
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The world’s easiest way to design custom packaging
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Poly mailers, also known as polythene mailing bags, provide a robust and weather-resistant option for e-commerce fulfilment. We offer these plastic shipping bags in a durable 50-micron LDPE film that resists tears and moisture during transit. The opaque material options ensure the contents remain private, while a strong self-adhesive strip allows for quick packing without needing extra tape. These poly bags for shipping are a practical choice for a wide variety of products, especially clothing and textiles.

Durable poly mailers and their features

Every poly mailer bag uses a single layer of 50-micron LDPE polythene film, offering a reliable barrier against dirt and water. The peel-and-seal adhesive flap creates a permanent, tamper-evident closure, securing items from dispatch to delivery.

Poly mailers personalized with your design

Businesses can create fully custom poly mailers to display their branding. The design process allows for printing on one or both sides of the bag. Choose a single Pantone spot colour for a simple logo or select a full-colour CMYK print for more complex, photographic designs. The film itself comes in several base colours, including standard white, black, or a clear finish. The online editor simplifies the process of uploading artwork and visualising the final design before placing an order. For a specific example of a printed bag, see the Custom Poly Mailer Bag product page. We supply these poly mailers personalized for brands of all sizes, with wholesale pricing available for larger quantities.

Poly bubble mailers for extra protection

For items that require more cushioning, our range includes poly bubble mailers. These soft shell poly bubble mailers incorporate a layer of bubble lining on the interior, providing protection against impacts for more delicate goods like jewellery or electronics.

Sizing and applications for poly mailing bags

Our collection of poly mailers in the UK covers a wide spectrum of sizes, from 17.5 x 25.5 cm for small accessories up to 45 x 55 cm for larger garments or multiple items. This range includes sizes that accommodate standard A4 and A3 documents or products. Their flexibility makes these poly bags for mailing suitable for soft goods that do not need rigid protection, such as t-shirts, books, and fabrics. They are a popular choice for fashion brands and are often used as mailing bags for Vinted sellers. For unbranded shipping, the Plain Poly Mailer Bag offers a simple and effective solution.

FAQ

What sizes are poly mailers available in, and how do I choose?

Poly mailers come in several sizes, roughly from 17 x 25 cm for small items up to 45 x 55 cm for clothing and bulkier orders. To choose, take your product's flat dimensions and add a couple of centimetres for the seal, so it fits without stretching. The sizes for each model are on its product page.

Can poly mailers be personalised?

Yes. You can personalise poly mailers with your logo, text and full-colour artwork in the online editor. You see a preview before ordering. Plain, unprinted poly mailers are available too.

What colours do poly mailers come in?

Poly mailers come in white, black and grey, and there is also a transparent version for showing the product. You can print full-colour artwork over the surface as well. The colours and finish for each model are on its product page.

Do poly mailer sizes match your mailer boxes?

Poly mailers and mailer boxes are sized separately, so they are not a matched set. If you want to slip a mailer over a box for extra, water-resistant protection, choose a bag a little larger than the box. The dimensions of each are on their product pages, so you can find a fit.

Can people see through a poly mailer?

Standard poly mailers are opaque, so the contents are not visible from outside and the parcel stays private. There is also a transparent version for when you want the product to show through. The colour and finish of each model - opaque or clear - are shown on its product page.