I actually love this slipcover!! 
Full disclosure is that I used to run a store that did custom interiors, so I am used to making things look good when it involves stretching, pulling or forming fabric and I am really good with t-pins and ball-head basting pins. Still, if it’s badly sewn or bad fabric, there’s nothing I can do. I had just ordered this chair because all the stores were closed and it arrived stained and with a wonky leg. The company made me whole so I thought I’d try a slipcover. This chair is 48” tall and doesn’t really even have wings. It is a scoop back. The maximum height allowable for the slipcover is 43” but this cover fits beautifully. There is a bit extra fabric across the back but I just formed a box pleat (like in a bed skirt) in the center of the back of the chair and pinned it down (way below the cushion) with some t-pins front and back. You can see the result looks quite nice! The fabric is soft, but not baggy and I anticipate years of good use.