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Compostable Poly Mailers

Lightweight, flexible mailer, compostable at home or in industrial facilities.
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Compostable mailers have all the lightweight shipping benefits of traditional poly mailers, but with proper disposal, they break down into natural components that aid in healthy soil. 

These mailers are made from renewable bioplastic derived from corn starch combined with a synthetic binding agent for strength and flexibility. They can be composted in a home compost bin or in industrial composting facilities, depending on local availability.

Can be produced with one adhesive strip, or two for easy returns.

Alternatives

Poly Mailers
Only recyclable at dropoff facilities
Flexible Kraft Mailers
More accessible recycling and compost

Materials

All materials
This product is available in the following materials.

Cornstarch PLA/PBAT

Compostable plastic made from renewable biomass and a synthetic binding agent.

Printing

All processes
This product is available with the following printing processes.

Flexography

Ideal for printing high volumes economically on surfaces like corrugated, paper, film and plastic.

Rotogravure

Great for printing fine detail, gradients, and bright colors, consistently throughout many print runs. The roto process is built to print on flexible materials like plastic film.

Sustainability

All properties
This products meets the following sustainability properties, or can be custom manufactured to meet them.
C

Compostable

Breaks down into natural components that become part of healthy soil.
Ai

Alternative inks

Uses vegetable or soy oil as a base, rather than petroleum.
R

Renewable

Made from materials that can regenerate on a human time scale and be responsibly managed.
Vr

Volume reduction

Reduces the amount of space necessary for transit and storage.
Wr

Weight reduction

Reduces overall weight in transit.

Dielines for standard sizes

Dielines are templates you can edit with Adobe Illustrator to create advanced packaging designs. Start a project to request custom sizes.
Read our how-to guide →
Request a custom size →
7.5 × 10.5 inches
10 × 13 inches
12 × 15.5 inches
14.5 × 19 inches
19 × 24 inches

Frequently asked questions

PLA/PBAT mailers have a shelf life of 9-18 months, depending on moisture and temperature. For the longest shelf life, store them in a dry, cool environment.

For positive printed designs (a design printed on a white background), the plastic liner inside the mailer will be grey. For reversed out designs (a design reversed out of a printed background), the mailer will have a white interior, which means you’ll see some translucency where there is white showing through on your design.

The PLA/PBAT mailers are certified home compostable and industrial compostable.

In the optimal conditions of industrial composting facilities, compostable plastic breaks down within 90 days, leaving behind only CO2 and water. An ideal mix of moisture, oxygen circulation, and temperature accelerate the material breakdown.

In a home composting bin, it takes come practice to mimic this ideal mixture. Break down can take up to a year for compostable plastics.

Access to industrial composting is limited, but as compostable plastic becomes more common, we hope to see more options — both home and industrial — for composting. For now, there are a few ways to ensure your compostable plastic ends up in the best place:

  • Provide resources for easy home composting.
  • Offer resources to mail-in or in-person dropoffs.
  • Encourage reuse — if your customer can extend the life of your packaging, they’re sparing new resources. Consider adding a second adhesive strips for a return strip, or encourage your customers to reuse the mailers for other uses.

Compostable Poly Mailers can cost 5-20% more than standard LDPE poly mailers. The strength of the PLA/PBAT poly mailers is comparable with regular LDPE poly mailers.

The blend of PLA (Polylactic Acid) and PBAT (Adipate Polybutylene Terephthalate) is what makes the mailers strong and flexible.

PLA is derived from renewable biomass, typically fermented plant starch from corn, cassava, sugarcane or sugar beet pulp. On its own, it’s somewhat brittle. When combined with PBAT — a fossil fuel derivative — it becomes stronger and more flexible.

It is best to dispose of compostable plastics in industrial composting facilities or home compost.

Just like food waste, compostable plastics trapped in landfills are missing the ideal mixture of moisture, heat, and oxygen, so they take a very long time to degrade, if the plastic can degrade at all.