Regular price $32.27 Sale price $16.12 Save $16.15
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  • Flap: 80mm Double adhesive
  • Handle: 80mm 
  • Available in S: 260x310+80+80 and M: 310x395+80+80
  • Unit Weight: 0.1kg
  • Material: Corn Starch, PLA, PBAT
  • Weight Limit: Up to 5kg
  • Shelf Life: 9 months in a cool & dry place
  • Home and commercially compostable
  • Decompose approx. 6 months


Our eco-friendly compostable mailers are home and commercially certified. They are carbon negative, biodegradable, waterproof and reusable. Eco-friendly and biodegradable packaging is the next crucial step towards flattening the curve of environmental disaster. If you want to take that step whilst simultaneously removing your footprint, it’s time to utilise Unicorn Pack’s compostable mailers in Australia and for overseas shipping. 

Our mailer bags are suitable for packing items under 5kg.  Compostable materials aren't as thick as the usual plastic mailers due to their eco-friendly qualities.  With items that have sharp edges, please handle with care - test it out before sending it out.

This fine product is manufactured with biodegradable and compostable packaging and also features two adhesive strips for return purposes, so you can reuse the mailers before composting!

Just in case you’re looking for something a little special, we offer custom compostable mailers (internal link to customisation page) to suit your branding and specific requirements. 

For the highest quality of eco-friendly postage bags in Australia, tee up Unicorn Pack to complete your order.

If you don't have a home compost bin, you can do one of the following:


  1. Check if anyone has a compost bin in your area!
  2. Check your council's website. There are a number of them doing kitchen and garden waste collection.
  3. Find a compost facility.
  4. Best of all, build your own home compost bin (internal link to article) or worm farm!

Compostable Mailer - The best sustainable product for e-commerce businesses!

Check our size guide for exact dimension examples.

Have any questions in regards to the Compostable Mailer Bags, wholesale orders, Shipping and Returns, or About our Company? Contact us to have a chat!


        All orders placed before midday will be dispatched that day. After this cut-off time, orders will be dispatched the following business day. Our team work hard to ensure orders are sent out as soon as possible, however, please allow 1 – 2 days for your order to be processed. 

        Please contact us if you wish to receive your order urgently.



        New South Wales, Victoria, Queensland, Australian Capital Territory, Tasmania

        Australian Standard Shipping 3 - 7 Business Days $10
        Australian Express Shipping 1 - 3 Business Days $15

        South Australia

        Australian Standard Shipping
        3 - 7 Business Days Base on weight


        Western Australia

        Australian Stabdard Shipping 3 - 7 Business Days Base on weight



        New Zealand

        International Standard Shipping 4 - 7 Business Days $30
        International Express Shipping 2 - 3 Business Days $50


        Please note the above shipping time frames are an estimation only and delays may happen during transit from time to time in which Unicorn Pack cannot be held responsible for.



        We hope you will love the products from Unicorn Pack. However, if you are not 100% happy with your purchase, you may return or exchange your purchase, subject to the following terms:

        Please read the following carefully before making a purchase as we will not be able to process your return/exchange if any of the following criteria is not met.

        • Returns must be approved by our customer service team before shipping.
        • Any concerns or issues must be raised within 10 days of receiving your purchase.
        • Items must be returned within 10 days of receiving your purchase.
        • All products and packagings must remain in original condition.
        • Refunds are only available for full priced items unless faulty.

        We recommend to return your products with a tracking option, Unicorn Pack will not be responsible for any parcels that are lost in transit. 

        Your return will be processed within 5 business days of receipt. An email notification will be sent once your return is processed.

        We do not refund initial shipping charges for items returned, unless faulty.

        For more shipping & return informations. please read HERE