Folding chairs are rarely at the forefront of great design but the Piana Chair by British architect David Chipperfield for Alessi might change that for good. Made with 100% recycled polypropylene and only two screws, the chair has beautiful modern lines and plenty of bright colour options. I think that soft curve at the back of the chair gives the piece its soul and overall elegance. How fantastic would a stack of these look in a design studio?