I am desparately trying to find a black chair slipcover and matching ottoman cover. Most of the ads I have see are for chairs that have an outside arm to outside arm width of 43". My chair measures 46" across with a 22" x 22" box cusion. Has anyone bought covers for a chair this size? I really want black and don't necessarily care about the material. I wonder if the stretch ones will stretch to wider than 43". thanks.