Love this set.  I had no idea that they even made sets specifically for day beds and I was originally wrapping the mattress with a blanket.  The blanket did not look good and would not stay put if you sat on the bed.  This quilt fits the mattress perfectly (i have a 10" mattress-but the topper should fit any size mattress).  The cover has slits for the side bars of the bed.  The dust ruffle completely covers the trundle.  It comes with 3 sham covers and a cute little accent pillow.  Everything appears to be well made and the pattern and color are really cute and true to the pictures.