After only 3 months of use by a single person in an apartment, this sofa is showing significant sag, especially in the middle cushion.  Sitting to the left or right of the middle cushion has also become uncomfortable because it feels like your sliding inward toward the center cushion.  Seriously disappointed with how this purchase is holding up.  Thankfully i have taken out the insurance policy on this sofa as I will be attempting to make a claim for it's uneven wear.