WEBYOSHOOT 8 Inches Futon Mattress Full Size, Thick Futons Sofa Couch Bed, Floor Mattress for Adults, Shredded Foam Filling, Medium Firm (Frame Not Included), Grey. Full (54"x75") Options: 2 sizes. 40. 100+ bought in past month. $19999. FREE delivery Fri, Oct 4. Or fastest delivery Wed, Oct 2.