A flexible, self-sealing polythene shipping bag sized and specified around what's going inside, rather than a fixed one-size product. Orders start from 100 units.

▧Zero Die
& Plate Costs
▣High Resolution
Offset Printing
▤High-End
Screen Print
▥Digital Printing
Solutions
♨Quick
Delivery Timing
◈100 Unit
Minimum Order
✣Custom
Design & Sizes
▦Market Competitive
Pricing

A parcel doesn’t need a box just because a box is the default. Plenty of what ships every day only needs a sealed, lightweight covering that survives the journey, and a poly mailer is built for exactly that gap.

A poly mailer replaces a box, it doesn’t shrink one

A poly mailer is a flat, flexible film bag rather than a folded carton, built for items that don’t need structural support: clothing, soft goods, and most standard ecommerce items that can tolerate a bit of flexing in transit. Where a product is fragile, heavy, or needs to keep a fixed shape in the parcel network, a box or a padded mailer is the better fit, not this format.

The self-seal strip is the only assembly step

Closing the bag is a peel-and-stick adhesive strip rather than tape, staples or heat-sealing equipment, so packing doesn’t need anything beyond pressing the flap down. That suits a high-volume packing bench where speed matters. It’s worth knowing this closure isn’t built as a tamper-evident feature on its own, though, so mention that requirement upfront if it genuinely applies rather than assuming the standard strip covers it.

Film thickness is the real variable behind water and tear resistance

How well a poly mailer resists water and tearing depends on the film thickness and construction chosen for that order, not something every poly mailer automatically has to the same degree. A heavier-gauge film generally copes better with puncture and abrasion during handling than a lighter gauge does, so the specification is set by what’s inside and how far it needs to travel, not fixed across every order. Colour and opacity are also a specification choice: an opaque or coloured film keeps the contents hidden in transit, where a clear or lighter film does not, which matters more for some products than others. Pantone references and CMYK values can be used to manage colour consistency, subject to normal variation caused by the chosen board, ink, coating and production method.

Orders start from 100 units. Design support is free. A digital 3D mock-up is free. There are no setup fees. Standard production takes 6 to 8 business days after approval. UK delivery is free.

When this is not the right mailer

Wanting the branding and print-customisation side of this same format, Personalised Poly Mailers covers that ground directly. For genuinely unprinted, ready to go stock instead, Blank Poly Mailers is the closer match. Shipping garments specifically, Clothing Poly Mailers is built around that use case. The full range is under Poly Mailers.

Box StyleAll Custom Packaging
DimensionAll Custom Sizes & Shapes
Quantities100-unit minimum order
Paper StockKraft, corrugated, rigid board, cardstock
PrintingCMYK, Pantone, digital and offset
FinishingGloss, matte, spot UV, embossing, foiling
ShippingFree delivery options
✦ Finishing Options

Finishing & Material Options

Choose from premium coating, board, printing and finishing options for your insert boxes.

Varnish

Varnish

A transparent finishing layer available in gloss, satin, or matte effects. It enhances the printed surface and adds an extra layer of visual appeal and light protection.

Spot UV

Spot UV

A UV-cured coating applied to specific areas of the design to create gloss or matte contrast and draw attention to important details.

Soft Touch Coating

Soft Touch Coating

A smooth, velvety coating that creates a soft tactile feel and gives packaging a refined luxury look. It improves the unboxing experience and supports a high-end product presentation.

Silk Lamination

Silk Lamination

A soft, smooth lamination with a refined satin-like finish. It gives packaging a premium feel while keeping the surface elegant, subtle, and easy to handle.

Spot Gloss UV

Spot Gloss UV

A high-gloss UV coating applied only to selected design areas to create sharp contrast, highlight logos, and add a premium visual effect without coating the whole surface.

Aqueous Coating

Aqueous Coating

A clear, fast-drying water-based coating that adds a smooth protective layer while maintaining a clean and professional surface finish. It is a practical choice for everyday printed packaging.

Anti-Scratch

Anti-Scratch

A durable protective film that helps reduce visible scratches, scuffs, fingerprints, and daily handling marks. It keeps packaging looking clean, polished, and premium for longer.

White Kraft Paper

White Kraft Paper

A bleached kraft paperboard made from a mix of virgin and recycled pulp, offering a clean white surface for crisp and polished packaging designs.

Uncoated Unbleached Kraft

Uncoated Unbleached Kraft

A natural kraft paperboard without coating, made from virgin and recycled pulp. It provides a raw, organic appearance with sturdy packaging strength.

SBS C2S Paper

SBS C2S Paper

A premium bleached paperboard coated on both sides, designed for excellent print quality, die-cutting, and professional packaging results.

SBS C1S Paper

SBS C1S Paper

A high-quality bleached paperboard coated on one side. It provides a clean printable face with a premium packaging feel.

Printing Paper

Printing Paper

A smooth printable paper stock that supports high-resolution graphics, clean text, and rich color output for refined packaging presentation.

Natural Brown Kraft Paper

Natural Brown Kraft Paper

A natural kraft paperboard made from strong virgin and recycled pulp. It provides an organic, earthy look for sustainable and simple packaging.

Metallic Paper

Metallic Paper

A specialty paperboard with a laminated metallic surface available in gold, silver, and other premium finishes for luxury visual impact.

Holographic Paper

Holographic Paper

A specialty paperboard with a laminated holographic surface that creates a reflective, rainbow-like appearance for eye-catching product packaging.

Fully Recycled CCNB Paper

Fully Recycled CCNB Paper

A recycled duplex paperboard with a white printable surface. It is ideal for economical packaging that still requires clean graphics and brand presentation.

Clay-Coated Kraft Back

Clay-Coated Kraft Back

A kraft board with a smooth clay-coated white face for quality printing and a natural kraft reverse side for a strong, authentic appearance.

Clay Natural Kraft

Clay Natural Kraft

A kraft paperboard with a clay-coated printable top surface and a natural unbleached kraft back. It balances clean branding with a rustic natural look.

CCNB Paper

CCNB Paper

A duplex paperboard made with recycled pulp and a coated white printable surface. It delivers smooth print results for affordable carton packaging.

Black Kraft Paper

Black Kraft Paper

A black-dyed kraft board with a natural paper texture and excellent strength. It creates a bold, premium look for luxury and specialty packaging.

Window Patching

Window Patching

A packaging technique where a die-cut opening is covered with a transparent film, allowing the product inside to remain visible while staying protected.

Registered Embossing

Registered Embossing

An embossing technique where the raised design is precisely aligned with printed artwork to improve detail, texture, and overall presentation.

Hot Foil Stamping

Hot Foil Stamping

A finishing process in which heat and pressure transfer metallic foil to the surface, creating a premium, shiny, and luxurious effect.

Combination Embossing

Combination Embossing

A premium finishing method that combines embossing with foil stamping to create a raised design with metallic color and strong visual impact.

Cold Foil Stamping

Cold Foil Stamping

A decorative process that transfers foil onto selected areas of the surface using UV-curable adhesive, creating a bright metallic effect with sharp detail.

Blind Embossing

Blind Embossing

A technique that raises a design from the surface without ink or foil, giving packaging a clean, elegant, and textured appearance.

Blind Debossing

Blind Debossing

A finishing technique that presses a design into the material to create a recessed impression without using ink or foil. It adds subtle depth and a refined tactile effect.

UV Printing

UV Printing

A fast-curing printing process that uses ultraviolet light to dry ink instantly, delivering sharp detail, vibrant colors, and a premium finish.

Screen Printing

Screen Printing

A durable printing method that uses a mesh screen and stencil to apply ink to surfaces. It is ideal for bold colors and high-impact packaging designs.

Offset Printing

Offset Printing

A traditional high-quality printing process that transfers designs from plates to a rubber blanket before printing, making it ideal for large-volume production.

Digital Printing

Digital Printing

A modern printing method that does not require printing plates, making it cost-effective and efficient for short runs, sample production, and small-batch quantities.

Triple Wall Flute

Triple Wall Flute

Built with three corrugated layers between four linerboard sheets, providing heavy-duty strength for large or industrial packaging needs.

Single Wall Flute

Single Wall Flute

A standard corrugated structure with one fluted medium and two linerboards, providing dependable strength for everyday packaging.

Single Flute

Single Flute

A corrugated sheet with one flute layer between two liners, offering lightweight strength for protective packaging.

F-Flute

F-Flute

An ultra-thin flute grade designed for lightweight packaging, small retail boxes, and high-quality printed presentation.

E-Flute

E-Flute

A slim flute grade with a flatter surface, ideal for detailed printing, display packaging, and premium retail boxes.

Double Wall Flute

Double Wall Flute

Made with two layers of corrugated medium between linerboard sheets, offering added strength and durability for heavier products.

C-Flute

C-Flute

A versatile corrugated flute that offers balanced compression strength, cushioning, and printability for many packaging applications.

B-Flute

B-Flute

A thinner flute grade with a smooth surface, making it suitable for high-quality printing, precise die-cutting, and neat retail packaging.

A-Flute

A-Flute

A thick corrugated flute profile that provides excellent cushioning, compression strength, and stacking support for protective packaging.

Oyster White Board

Oyster White Board

A coated linerboard with an off-white surface, suitable for high-quality printing and a refined packaging appearance.

Natural Kraft Board

Natural Kraft Board

An unbleached kraft linerboard made from recycled paper pulp, offering a natural look with strong durability for eco-conscious packaging.

Kemi White Board

Kemi White Board

A coated semi-gloss linerboard with a smooth white surface, ideal for sharp printing, premium presentation, and retail-ready packaging.

Bleached White Board

Bleached White Board

A fully bleached corrugated board with a bright white surface, designed to produce clean, vibrant, and high-quality printed packaging.

UV Ink

UV Ink

A UV-cured ink that dries instantly under ultraviolet light and creates crisp, high-quality print results on a wide range of packaging materials.

Soy Ink

Soy Ink

A plant-based ink made with soybean oil, offering rich color output and a more sustainable printing option for carton packaging.

Pantone

Pantone

A standardized color-matching system used to achieve consistent, accurate brand colors across packaging, labels, and printed materials.

CMYK

CMYK

A full-color printing process using cyan, magenta, yellow, and black inks to create vibrant images, gradients, and detailed packaging artwork.

Customer reviews

What Customers Say About Our Packaging

Real feedback from customers who trust us with their custom packaging.

Product FAQs

Frequently Asked Questions

Clear answers about ordering, artwork, production, materials and delivery.

What size poly mailer do I need?

Sizing follows the product going inside with a little room to spare for the seal, rather than one fixed size across every order. Tell us the item's dimensions and we can match a size to it.

Do I need printing, or does the colour of the bag do the job?

Either can work depending on what needs to show. A coloured or opaque film covers the contents without printing at all, while a clear or lighter film usually needs a printed layer if anything needs covering or branding on the outside.

What is the minimum order for Poly Mailer Bags?

Orders start from 100 units. Standard production takes 6 to 8 business days after approval.

Are poly mailer bags recyclable?

Only through the right collection point, and that point usually isn't the kerbside bin. An unlaminated paperboard construction may be easier to process through suitable paper-recycling streams than a heavily laminated alternative, and a poly mailer sits outside that comparison entirely since it's a plastic film, not board. A growing number of large supermarkets now run a front-of-store take-back point for exactly this kind of soft plastic. That's generally the better option. A household paper or plastics bin is more likely to reject the bag outright or let it contaminate whatever it's mixed into. Final recyclability depends on the full material and finishing specification and the facilities available locally.