Black Collapsible Cube - Storge Box In the shop or on the go, use this handy collapsible storage bin to hold towels, toys... Then fold it flat and hide it away! Made of easy-clean polyester, it features a cute pawprint decal It has a tough sewn-on handle and solid fold-down bottom. Collapsible Cubes measure 16"L x 16"W x 16"H. Black.