German bicycle label Schindelhauer is all about balance. As well as an aluminium frame, which at 8.2kg is light but still rigid it has also perfected the carbon belt drive system to create the quietest, smoothest and cleanest ride yet. But for Treehugger founder Graham Hill, there was still one problem with the beloved two wheeler - space. This in mind, he collaborated with the company to produce a version called the ThinBike with folding handlebars and pedals for easier storage. Here he takes us through how his ingenious version works