11 size options

100% recyclable

FSC certified

Flexo-printed Paper Mailer Bag

Minimum order quantity: 20000

Trusted by leading brands for volumes for 10,000 bags and above, our Flexo Printed paper mailer bags come in two styles, the Side Gusset and the Bottom Gusset. Across different sizes, these offer greater volume coverage that envelopes whilst maintaining their strength for domestic and international transit. Easy to pack with single or double peel & seal options, the bags can be customised with double sided print with 1 or 2 colours using the flexo print technique.

  • Made for e-Commerce
  • Free UK delivery
  • 11 sizes
  • Custom printing
  • Flexographic printing

Have questions? Contact us

Key features

Carbon footprint

Switch to a more sustainable mailer bag and reduce your carbon footprint by up to 50%.


  1. Bk

    Brown kraft paper

    FSC certified, unbleached and uncoated kraft paper made from virgin pulp. Brown kraft paper is the most sustainable material for these paper mailer bags.
  2. Sg

    Side Gussets

    This bag has two gussets, one on either side; This type of bag can hold more volume.
  3. Bg

    Bottom Gussets

    This bag has one gusset at the base; This type of bag is quicker to pack.
  4. 8g

    80 gsm

    A light paper thickness is typically used for smaller-sized paper bags.
  5. 1g

    100 gsm

    A standard paper thickness is commonly used for most domestic shipping scenarios.
  6. 1g

    120 gsm

    A heavier paper thickness is recommended for brands desiring a premium feel.
  7. Dp

    Double peel & seal

    Two strips of adhesive covered with fibre-based backing paper. A double peel & seal makes fulfilment fast and returns easy for your customers.
  8. Sp

    Single peel & seal

    One self-adhesive strip for quick fulfilment.

Supply chain assurance

A resilient, responsible supply chain


We validate all supplier claims and third-party certifications such as ISO, BRC and FSC. And we ensure suppliers adhere to UK and EU laws on chemicals and product components, like UK REACH. This allows businesses to confidently buy high-quality products that align with a net-zero trajectory.

Look for our FSC® certified products.

Vetted suppliers

We vet every supplier we work with. We do this through site visits and rigorous product testing.

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Quality control

Every lot from our suppliers undergoes a quality inspection process before it’s shipped. Any lot that fails quality inspection is returned to the manufacturer or reproduced.

For orders manufactured internationally (outside the UK), we follow the Acceptable Quality Limit (AQL) method defined by ISO 2859 - 1.

For orders manufactured domestically (inside the UK), our suppliers perform the quality inspection process which we then verify through spot checks throughout the year.

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