The Zipper Z1S electric bike is great for commuters with its small size that easily folds up for practical storage and transportation. You do not need to worry about it being stolen outside as it can be easily folded and taken in with you. When unfolded the frame locks in place with a patented safety lock keeping the frame rigid and in place. The Z1S will assist up to 15.5 mph which is the UK maximum allowed for an electric bike to be road legal without a license or tax. Just select how much help you want from the electric system using the easy selector switch, start pedalling and the motor will assist. This new upgraded version has a 10AH battery, new water resistant wiring, new LCD control panel and a new aluminium frame. The battery is neatly secured inside the frame so is not visible. Other features include walk assist with finger throttle, kick stand, battery life indicator, bright front and rear LED lights and rust resistant chain.