These chairs literally weigh about 2 pounds each, including their new slipcovers, and so can easily be moved inside to provide extra seating.
I forgot to take a picture of the original fabric, but it is a black Sunbrella. The gray is just a touch lighter and the skirts make them seem fancier than they really are.
The covered buttons are more than just a nice touch. Because the top of the chair is wider than the bottom, without an opening of some kind, it would not be possible to get the slipcovers on.
My client, and her adorable dog, love the 'new' chairs.