We are in the process of getting our paper bubble mailers certified HOME compostable, at this stage though they are only industrially compostable. To be certified home compostable the mailers have to break down within 180 days.  The bubble mailers can go into a home compost as they are but they might not breakdown within the “home compostable” time frame. If you would like to speed up the process you could break the layers apart to reduce the thickness and speed up the process.