Why do you choose compostable mailer for mailing?

It seems that compostable mailer become more and more popular for mailing.

Many customer expecially Australia customer prefer choose compostable mailer as their choice.

Custom Compostable Poly Mailer Bags with Handle
Custom Compostable Poly Mailer Bags with Handle

So what is compostable mailer and why it became a trend?

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.