LUCID 4 Inch Folding Mattress and Sofa with Removable Indoor/Outdoor Fabric Cover - Queen Size Doubles as a sofa style floor chair to provide comfortable seating and a convenient guest mattress in one Perfect for sleepover guests, camping, cabins, dorm rooms and children's playroom Use as a mattress topper, portable cushion and guest bed - great alternative to futons, bunk beds and trundle beds Durable indoor/outdoor cover is removable and machine washable - 5 Year Warranty CertiPUR-US certified with no harmful odors, resistant to dust mites and safe for children