I brought three sofa covers burgundy, navy, and the one that looks like gold. They are all beautiful, feels soft and the material great quality and the fit is perfect on my sofa. The size of the back of my sofa is 73 left to right and top to bottom of the back is 34”
from the front of sofa’s arm to the bottom is 28” and  the front middle of sofa 19” from the cushions to the bottom.  There is extra material to work with so that the material doesn’t come out when u sit on the sofa. I hope this help!!!  I am so happy I order this bec I have gotten so may compliments. Now I am ordering the covers for my two chairs to match my sofa. Thank u Wayfair now I have many variety of colors and ways to style my living room! 
Love it!!!!