I experimented yesterday. You can get 4 sets of charms plus a return bag in the padded flat rate envelope. I did not try to get all of the bags in a "master" ziplock (can't think of another word for it), though. I just put them in the mailer and tried not to wrinkle them up too much.
I didn't seal the individual sandwich bags completely. I left a small opening in each. When I got them in the mailer, I "squished" them down to remove excess air. Then, I added the return bag. My goal was to get 4 sets in the bag. I didn't try for 5.
bkay
Last edited by bkay; 01-12-2024 at 06:44 AM.