Kid's bikes don't usually last very long. Depending on how quickly a child grows, it's possible to go through as many as five different bike frame sizes by the age of 12, which can be expensive and leads to plenty of material waste. Switzerland-based designer Andreas Bhend is hoping kids can keep their bikes longer with his invention: a new bike that transforms when a toddler grows a couple of inches.
Image: http://www.fastcoexist.com
