From Longman Dictionary of Contemporary Englishfoldawayfold‧a‧way /ˈfəʊldəweɪ $ ˈfoʊld-/ adjective [only before noun] DHFa foldaway bed, table etc can be folded up so it uses less space → folding
Examples from the Corpus
foldaway• At Camden Yards stadium, they designed the 400 foldaway seats allowing fans to use either wheelchairs or regular seats. 