From Longman Dictionary of Contemporary Englishcollapsiblecol‧lap‧si‧ble /kəˈlæpsəbəl/ adjective FOLDsomething collapsible can be folded so that it uses less space a collapsible chair
Examples from the Corpus
collapsible• It's only a narrow collapsible bed.• collapsible chairs• Aft of him was stowage space for a collapsible dinghy, maintenance platforms and a spare propeller!• In his Roos-Atkins collapsible hat and safari jacket, he might have stepped from the pages of Field and Stream.• They would take collapsible rods, a couple of guns, and have to fish and shoot to eat.• I purchase a tiny, collapsible umbrella.• She now had a collapsible white metal stick she used quite defensively when out walking. 