Custom Large Poly Mailers

Film Weight, Opacity and the Seal

Large bags carry heavier loads and are more likely to be dragged across a sorting belt, so film thickness matters more than it does on a small mailer. A co-extruded film with a white or grey inner layer keeps the contents private, so nobody can see the brand of trainers or the colour of the jumper through the bag; the tear strip poly mailers add an easy-open strip to the same film.

Every bag closes with a peel-and-seal strip that bonds firmly and shows obvious damage if someone tries to open it. If you accept returns, a second strip lets your customer reseal the same bag and send the item back without hunting for packaging. That small detail tends to reduce the number of items that come back badly wrapped.

Printing That Works on a Big Canvas

A large mailer gives you a generous print area, and it is tempting to fill it. In practice, the strongest designs are simple: a solid brand colour, a large logo, and perhaps a short line on the back such as your web address or social handle, as the print and finish options compared page shows for flexo print. Couriers stick their labels on the front, so leave a clear, unprinted or light area roughly 150 x 100 mm where a shipping label can sit without covering your logo.

Poly mailers are usually printed flexographically, which works best with solid colours rather than fine gradients or photographs. One or two colours on a coloured film can look very striking, such as white ink on black, or black ink on a pastel pink film. We show the ink and film combination on your proof so there are no surprises.

Who Buys Large Mailers

Streetwear and loungewear labels are the biggest users, since hoodies and joggers are their core products. Knitwear makers, denim brands and outdoor clothing sellers need them for bulkier items, and most keep smaller e-commerce poly mailers for tees. Subscription clothing boxes sometimes switch to large poly mailers for lighter months to save on postage, and textile sellers use them for bedding, cushion covers and towels.

Charities and clubs that sell merchandise online also order them, because a printed bag makes a branded hoodie feel like a proper product rather than something sent in a plain envelope.

Gift sellers and homeware shops use the bigger sizes for soft furnishings such as throws and cushion covers, which are light but awkward to box. For all of these buyers, the appeal is the same: a parcel that is cheap to post, quick to pack and still carries the brand from the warehouse shelf to the doorstep.

Packing Habits That Make Large Mailers Work Harder

A bigger bag is only an improvement if the garment inside arrives looking good. Fold clothes around a sheet of printed tissue paper or a light card so they hold their shape, and slip the item into its own clear bag if it is pale or likely to snag. That inner layer also protects against the odd scuff if the parcel is left on a wet step.

Avoid sending a single T-shirt in a jumbo bag. Excess film flaps about, catches on sorting equipment and looks careless when it arrives, so it pays to keep one smaller size on hand for light orders. Equally, do not overfill: if the seal strip has to stretch to close, step up a size.

Think about the unboxing moment too. A printed message on the inside of the bag, such as a short thank you or a care note for the fabric, is a low-cost touch that customers notice when they tear the parcel open. A returns slip tucked against the second adhesive strip makes the whole process feel organised from the first order.

Bag Your Bulkiest Hoodie Before You Confirm the Size

Large mailer orders go wrong on the one garment nobody tested, so fold your heaviest hoodie or your thickest knit exactly as the packers will, with tissue, polybag and swing tag, and slide it into a plain bag of the size you have in mind. If the seal strip has to stretch to close, go up a size or add a gusset. Measure the folded garment's width, length and thickness and send all three, because the thickness is added to both width and length. Add a second adhesive strip if returns matter, and keep a plain area for the courier label.

Tell us the sizes, the film colour, the print colours and roughly how many bags a month you use, and a custom quote comes by email within one working day, minimums low and quoted per job. A free design proof shows the artwork on the bag with the label area and seal strip marked. Production takes 4 to 7 working days after approval and free tracked delivery reaches UK mainland addresses in 2 to 3 working days. Labels that post trainers too usually add branded poly mailers in a gusseted size.