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Flat Poly Mailers

Flat Poly Mailers

Lightweight flat poly mailer envelopes for clothing, accessories and non-fragile e-commerce orders. Economical, waterproof and self-sealing, printable in full colour. Custom sizing and branding, wholesale MOQ.

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How to Specify Custom Flat Poly Mailers

Flat poly mailers are lightweight shipping bags for apparel, textiles and other non-fragile products. A production brief should state the usable internal dimensions, polyethylene structure, film thickness, opacity, seal design, closure strips, tear opening and print coverage. Measure the packed product rather than copying a competitor envelope size.

Film and Closure Requirements

Film thickness influences puncture resistance, feel and material use. Co-extruded film can combine a printable outside with an opaque inside. A permanent self-seal strip supports outbound delivery; a second strip can make customer returns easier. Barcodes and writable areas need enough contrast for fulfilment operations.

Testing Before Bulk Production

  • Pack the largest product and remove excess air
  • Test seals, puncture resistance and tear opening
  • Scan labels over the printed film
  • Approve dimensions and print on a production sample

Review the custom printed poly mailer, read the e-commerce mailer guide, or request a quote.

Frequently Asked Questions

How should a custom mailer be sized?
Measure the largest packed product and specify usable internal dimensions because seals, closure and cushioning reduce packing space.
Which mailer features belong in the brief?
State film or paper structure, thickness, opacity, closure, return strip, cushioning, print coverage, labels and packing.
What should be tested before production?
Test product fit, seals, puncture resistance, tear opening, label adhesion, barcode scanning and the fulfilment process.

Send your specifications for a quote