I will be using these to send out ceramic penguins I hand-make. I've only started selling them at the start of the year and I sell out of each batch I make, which is a great problem to have! I really wanted to make sure that all the packaging I use to send them out in is as environmentally friendly as possible. I also use the Ranpak wrap-pak which is an eco version of bubble wrap which makes everything I send them out in either compostable or recyclable! Using the mailers you make means I don't need to use sellotape to close the box and makes such a difference to both the look and feel.