
Custom Poly Mailers.
Final price depends on size, material, finish and quantity. Your packaging manager confirms it before production.
Your custom box, quoted.
The full specification book.
Six chapters. Six colours. Click a tab to turn the page.
Poly Mailers
Ounces instead of a pound, the lightest way to ship anything that cannot be crushed.
A printed polyethylene bag with a self-adhesive closure. For apparel and soft goods the weight saving is paid back on every single parcel, which is why fashion e-commerce runs on it.

Every detail. Intentional.
Weight is the whole case
A fraction of a box's mass on every shipment.
Best for soft goods
Apparel and textiles that cannot be crushed.
Recycled content available
High post-consumer polyethylene at near-identical performance.
Not kerbside recyclable
Store drop-off or compostable grades are the honest routes.
Gauge against the contents
2.5 mil standard, heavier for sharp or dense goods.
A second adhesive for returns
Apparel almost always needs the second seal.

Built like architecture.
Every order of Custom Poly Mailers is an engineered build, measured, dieline-cut and hand-wrapped to spec. Below is the standard build sheet.
✦ Need a custom spec? Talk to our atelier. Every detail is negotiable.
Every surface, hand-selected.
What this product is built from, and the surfaces it takes. Below the build sheet sits the full swatch library. Every option applies across our range, and a physical swatch set is available on request.
Material
The board and paper your box is built from.
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How the outer surface looks, feels, and catches light.
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Closures, linings, and hardware that complete the build.
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◷ FINISH✦ Mix and match across all three and we'll build your exact combination.
The full kit of capabilities.
Sizing & dieline.
We cut Custom Poly Mailers to a dieline built around your product instead of pulling a stock size off the shelf. Send us the length, width and height of the item (or the item itself) and we return a measured dieline, free, before you commit to anything.
Length, width and height of the item itself, at its widest points. Measure the product, not the box you happen to use today.
Allow 2–4 mm on each axis for a snug fit, and more if you are adding foam, a pillow insert or tissue.
We quote as Length × Width × Height. Tell us whether you are working in millimetres or inches and we match it.
✦ Not sure of your size? Send us the product and we measure it and build the dieline.
Pricing & minimums.
We price Custom Poly Mailers per specification rather than from a fixed list, because the same build in two different finishes can land at very different numbers. Below is what actually moves the price, so you can shape the spec before you request a quote.
The single biggest lever. Unit cost falls sharply as volume rises, because setup and tooling spread across more pieces.
Board weight and stock choice change both the raw material cost and the shipping weight of the finished run.
Foil, spot UV, embossing and soft-touch each add a pass on press. One or two lift the box; five compound the cost.
Full-bleed print inside and out costs more than a one-sided design on natural stock.
Foam, moulded pulp, velvet pillows, magnets and ribbon are priced per piece on top of the box itself.
Standard production is the base rate. Rush moves you up the production queue and carries a surcharge.
✦ Quotes returned within 24 hours.
Questions, answered.
Everything you need to know about Custom Poly Mailers.
2.5 mil is our standard gauge, and we go heavier for sharp-edged or dense contents that could puncture the film. The film is co-extruded, which gives it better tear resistance than a single-layer bag of similar weight.
Folded apparel ships fine in the standard gauge. Boxed shoes, hardware or anything with hard corners should go up a gauge.
Yes, we add a second adhesive strip below the first so the customer can use the same bag to send an item back. They open the mailer along the tear notch, then peel the second liner when a return is needed.
For apparel, where returns are common, we would include the second strip by default. It adds very little to the bag and saves the customer hunting for packaging.
The peel-and-seal adhesive bonds to the film so firmly that the bag can't be opened and closed again without visible damage. That makes interference in transit easy to spot.
Opaque film grades keep the contents out of view, which helps with higher-value items. The film is water-resistant as well, so the contents stay dry when a parcel is left out in the rain.
Standard poly mailers are not accepted in curbside recycling, and it's better to say so plainly on the bag. Film can go to store drop-off programmes where they exist.
We can make mailers with high post-consumer recycled content and print the percentage on the bag. Compostable films are available too, but they need industrial composting facilities that many customers don't have nearby.
Full-coverage print is standard, with a choice of matte, gloss or metallic finishes on the film. A white base under the ink keeps colours accurate, and all-over patterns or photographic designs both print well. Most mailers are printed on the outside only.
A specific disposal note or the recycled-content percentage can be printed alongside the branding, which gives customers something clear to act on.
Our most requested flat sizes are 10 × 13 in, 12 × 15.5 in and 14.5 × 19 in, measured as width by length before the flap. Size to the folded item plus a little room for the bag to close without straining the seal.
A snug bag keeps the parcel light and neat, and weight is the reason apparel brands use poly in the first place. An oversized bag creases and looks untidy on arrival.
You can order printed poly mailers from 500 bags. For a shop sending a couple of hundred orders a month, that's a few months of stock, and the bags store flat in very little space.
Keeping the same size and artwork makes a reorder straightforward, and design help on the first run is free.
Printed poly mailers take 7 to 10 business days to produce, with a 5 to 7 day rush service when you need them sooner. Samples are made in 5 to 7 business days, which lets you test the gauge and the seal on real products.
The sample charge is deducted from the production order, and shipping covers every state in the USA.
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Ready to start your Custom Poly Mailers project?
Get a free quote in 24 hours. Our atelier is here to help.





