We have a large sized mattress with a foam topper on it, too.  So we needed a larger sized comforter. THIS QUILTED COMFORTER IS SO BEAUTIFUL, AND IT FITS PERFECTLY!  IT IS ALSO SO SOFT, COMFORTABLE, AND LOOKS REALLY GREAT ON OUR BED!  MY HUSBAND AND I BOTH LOVE IT!!  THANKS WAYFAIR  FOR MAKING QUALITY PRODUCTS.