Sturdy board Thick Cloth The cube set is made of non-woven fabric and paperboard, and each paperboard insert is very thick and strong. Convenient handle Simple and stylish handles for pulling out or carrying the box. Foldable Design It can be laid flat when not in use for convenient storage and space saving. Simple to assemble and convenient to use. Fits Shelving Systems & Cube Bookshelves Use alone or with a cube bookshelf, cabinet, shelving system. Maximize your storage space! Multi-Purpose Design