I use these products to send all of my PSA submissions after watching their official shipping guide video at youtube.com/watch?v=WlnN7kmxJtk and by carefully following the post-submission instruction page on their official website. A lot of factors are going to impact your submission wait time, and making sure that you package your submission exactly as they suggest can prevent unnecessary additional processing time. They have been backed up lately in 2025 with long wait times so anything you can do to get your submission moving along is going to help.