The Bergmoench is an unusual bike design by Koga which can be folded into a backpack. The bike is designed to be compact and lightweight for climbing hills and mountains. The vehicle can be unfolded into a bike at the top and ridden down the hill. The bike doesn’t have pedals, relying on the slope of the hill to propel the rider. It also doesn’t have a seat, but does have foot rests and brakes. The idea is users will climb a hill and roll down on the bike in a more upright position. The attached backpack even has space for other things like a helmet and food.