This rollaway bed is great to have on hand for extra guest or to use in an emergency situation. The 5" thick mattress features innersprings for support. The mattress has tapered and stitched edges. Heavy-duty steel frame has automatic leg opening and rounded corners for safety. The 4 5"dia swivel casters allow for easy mobility. Additionally, the fold-up bed meets California and Federal guidelines for flammability. Metal frame has a 5 year warranty from date of purchase, mattress has a 1 year warranty.