The tangram consists of seven pieces of puzzle that can be joined to form specific shapes, and likewise, transformation is the key to this Tangram Block Sofa. These pieces can be transformed into a sofa, mattress or desk easily, which is ideal for kids. And the 1800mm length can make adults feel the comfort. With play and fun as the inspiration, these products are designed to be used both as furniture and playthings. Available at Design Skin