It's a printable 3d model of a Seal of Approval stamp, shaped as an actual seal. It has 4 creative stamp variations, most are popular memes, like awkward seal and satisfied seal. You can easily insert and remove the stamp part by hand with a simple push and pull on edge. 4 PNG masks are also included in case you'd want to make customizations or maybe even use it for laser cutting. I've printed this with 0.3mm nozzle (0.4mm should also work), PLA filament, but you may get better results using TPU for the stamp part. Printed stamp-side up, followed by sanding for a smoother finish. You can see all of the process here https://www.youtube.com/shorts/2ON7zxlBO6I