Printed in PETG and it came out perfectly. The print-in-place hinge is easy to release. I had one break on me, but that was an issue with filament, and the second print was flawless after I adjusted my filament settings. If you have issues, check your filament settings. The extra clip for added tension is a nice touch, and I love the screw cap end. I printed another version that snapped/levered into place and it broke completely when I tried to take it off the bag. Screwing on the end ensures this is actually able to be transferred to new bags again and again. Great design choices.