Nearly invisible
They look like a small, open staple.  Can't even see them from the front.  I thought they would face forward, but they don't, and are so thin that you don't see them at all.<br />Otherwise, they are comfortable.<br />Not easy to put the backs on.  I lost the first one so thank goodness they did send 3 backs.  If you drop one you'll never find it!
Rating: 2 stars