Conventional bikes are already quite sustainable as far as their usability and utility is concerned. But, frame size might make you dispense them off as all users don’t have similar heights. The problem begins when a cyclist needs to resell his/her bike, but can’t find anyone because of the frame size. So how can a bike somehow adapt or grow with a user or multiple users? Nathan Durflinger addresses this difficulty with his unique bike design.
The final design is eco-friendly and adjusts to a range of different user heights. Pieces of finished plywood, polycarbonate, or machined aluminum can be used in fabricating one. The frame will accept all standard bike hardware found at most bike shops. The frame of the bike has been designed to expand out or contract in motion.