I LOVE LOVE LOVE THIS BOX SPRING.  It made my mattress feel so much better.  It was a breeze to unfold and zip up the cover and fit perfectly on my frame.  It is very sturdy and MUCH better than the old "wooden" box spring I had.  Will also be easy to move if I ever have to.  It arrived much sooner than expected which was a pleasant surprise!  I am very pleased all around.  Will be ordering more from Wayfair in the future.