How long does it take before we can use the mattress? 31 May 2023 04:22 It may take up to 72 hours for the cushions to fully expand to the proper size and recover to its correct comfort level. Related articles I have just opened my Sofa Bed cushion and it is out of shape/thin/wrinkled? What is the recommended weight capacity? How do I protect and clean my sofa? Are the covers removable? Do I need tools to assemble the Sofa Bed?