Each face shield has a 3d printed headband with an elastic strap to hold it in place. The shield is cut plastic, held in place by protruding pins in the headband. It's a snug fit, but we also include a set of caps just in case.
The headband design is a modification of Prusa's design, but it fits the face really well.
Please note: Headbands are printed in black PLA filament until we run out, then they'll be printed in whatever fun colors we have in stock. 🙂 If you need PETg filament, just drop that in a note during checkout. We have a spool of PETg available as well, no extra cost.