http://www.dezeen.com/2009/10/29/opera-by-axel-enthoven/
http://www.dezeen.com/2009/10/29/opera-by-axel-enthoven/
http://www.fastcodesign.com/1673310/live-in-your-sneakers-mobile-housings-next-step#10
http://www.designboom.com/art/mobile-shelter-pops-out-of-a-pair-of-sneakers/