Breathable skin anti-fog nose clip modelo 3D almost 2 years 17 Ear Savers For Surgical Masks -- (Read Instructions In Provided Text Document) modelo 3D almost 2 years 17 Surgical Mask Strap with Ear Savers (flexible and does not slip) modelo 3D almost 2 years 4 Surgical Mask Tension Release Band - UCLA Variant modelo 3D almost 2 years 3 8 Stack of ear guards for surgical masks (.3mm layer height modelo 3D almost 2 years 3 Surgical mask strap "ear guard" (less filament, quicker print) modelo 3D almost 2 years 4 Mask Ear Saver modelo 3D almost 2 years 4 Basic Quick Printing Strap Adjustment modelo 3D almost 2 years 4 Parametric Surgical Mask Retainer modelo 3D almost 2 years 4 Nanohack mod (two filters + improvements) modelo 3D almost 2 years 15 Surgical Mask Reusable modelo 3D almost 2 years 5