The are made out of a very specific weight swimsuit fabric that makes them feel weightless on the skin and fast drying so you don't have to change them right after a shower or bath.

Yes, very!

The HME covers are made of plastic that allow them to be used over and over.

Yes, but only hand wash them in soap and water. They arre not dishwasher safe or boiling water safe. Do not immerse them in water lfor long periods of time..