• Jiffy Expandable Protective Mailer - 1
  • Jiffy Expandable Protective Mailer - 2
  • Jiffy Expandable Protective Mailer - 3
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  • Jiffy Expandable Protective Mailer - 5
  • Jiffy Expandable Protective Mailer - 6
Jiffy Expandable Protective Mailer - 1
Jiffy Expandable Protective Mailer - 2
Jiffy Expandable Protective Mailer - 3
Jiffy Expandable Protective Mailer - 4
Jiffy Expandable Protective Mailer - 5
Jiffy Expandable Protective Mailer - 6
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From
£58.49 ex. VAT per pack of 100

In stockNext day delivery
  • Flex-to-fit design for snug, secure packaging
  • 100% recycled and kerbside recyclable paper
  • Peel-and-seal closure for fast, tamper-proof sealing
  • 15% lighter than traditional box packaging
  • Expands up to 2.5x the capacity of standard mailers
  • Sold and priced per pack
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Expandable, recyclable, and ready to ship – no extra padding needed


The Jiffy expandable Kraft mailer wraps books, accessories, cosmetics and other non-fragile goods in 100% recycled Kraft paper that flexes to fit the contents. Horizontal and vertical gussets, 140mm deep, let the mailer expand up to 2.5 times the capacity of a standard paper mailer, so one size covers a range of depths. Hexagonal honeycomb paper inside these expandable envelopes cushion the contents without any plastic bubble lining, and the pack runs about 15% lighter than a box with void fill. A peel-and-seal strip closes it with a tamper-evident seal, and no extra tape is needed for standard items. The paper is FSC-certified and kerbside recyclable.

Sold and priced per pack.

Where do expandable Kraft mailers work best?

Expandable Kraft mailers suit despatch benches that want protective paper mailing without moving to oversized boxes or loose void fill.

  • Books, catalogues and printed materials, where the gusset wraps closely and reduces movement in transit.
  • Accessories, cosmetics and non-fragile e-commerce goods, where honeycomb paper cushions without a plastic bubble lining.
  • Replacing small boxes for suitable items, where a lighter paper mailer cuts pack weight and postage.
  • Mixed order sizes from one bench, where the flex-to-fit gusset gives up to 2.5 times the capacity of a standard paper mailer.

Not for

  • Fragile items needing rigid corner or crush protection. Use a postal box for a firm outer shell.
  • Sharp or exposed-edge items that can pierce paper. Use bubble envelopes with more internal cushioning where needed.
  • High-value or bulky parcels sealed with the strip alone. Reinforce the flap with packaging tape.

Specifications

  • Colour: brown
  • Material: 100% recycled Kraft paper
  • Cushioning: hexagonal honeycomb paper, no plastic lining
  • Certification: FSC-certified
  • Recyclability: kerbside recyclable
  • Closure: peel-and-seal adhesive strip, tamper-evident
  • Gusset: horizontal and vertical, 140mm deep
  • Capacity: expands up to 2.5 times a standard paper mailer
  • Weight: about 15% lighter than a box with void fill
  • Internal sizes: 195 x 250mm, 240 x 295mm, 265 x 310mm, 365 x 450mm, 430 x 510mm
  • External sizes: 220 x 255mm, 265 x 300mm, 290 x 315mm, 390 x 455mm, 455 x 515mm

Choose the right mailer

This expandable reinforced mailer is ideal for when non-fragile goods need paper cushioning with variable depth.

FAQs

What are these expandable envelopes made from?

100% recycled Kraft paper with a paper honeycomb inner for cushioning. The paper is FSC-certified and kerbside recyclable.

Do I need extra void fill inside?

For non-fragile items, no. The expandable structure and honeycomb paper fit closely around the contents, cutting the need for loose padding.

Does the peel-and-seal strip need tape?

The tamper-evident strip suits standard items. For bulky or higher-value parcels, reinforce the flap with packaging tape.

How many sizes are there?

Five, all with a 140mm gusset, from 195 x 250mm to 430 x 510mm internal.

Can customers recycle it at home?

Yes. The paper mailer is kerbside recyclable, so recipients can put it in household paper recycling where accepted.

Also useful


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