Here you go @TomMitcheson

They are solids of constant width. A sphere is not the only shape with this property. Place them between two parallel boards and roll them between, they will always be tangent to both boards.

Same to you!

@JaredEMoskowitz Can these be of help? #madeinflorida #earsavers

@TheSmokingTire help us get our Ear Savers funded and we'll send you 10,000 (yes, ten thousand) Ear Savers mailed to your door for front-line workers.

Mass produced Ear Savers will help the most front-line workers. Our design is 12 inches, injection molded and very flexible. Check it out now on our Kickstarter.

Why all the hubbub about 3d printing, what about those trying to help through other manufacturing methods. We're trying to injection mold 20k units a week, can you help us get some exposure @FortuneMagazine

We're gearing up to make these by the tens of thousands. Any thoughts on this?

Yes, it's that simple. Tag someone who could use this! The ultimate Ear Saver for converting behind-ear masks to behind-head masks. #PPE #NHS #StayHomeSaveLives #EarSaver #madeinusa