Classic Brands Claridge Upholstered Mattress Foundation or Platform Bed (Grey, Full) (https://www.amazon.com/dp/B079TVW294?tag=quackdeals-20) It's an upholstered mattress base OR converts to a platform bed with metal frame and slat support (in grey, full size!) - for just $58.65 with free shipping on Amazon. Sweet dreams (and a stylish bedroom upgrade) await!
(https://m.media-amazon.com/images/I/91PZu0EClzL._AC_SL1500_.jpg) (https://m.media-amazon.com/images/I/91PZu0EClzL._AC_SL1500_.jpg)