The Hurley Black Betty Girl's E-Bike is perfect for zipping around town. The 350 watt/36 volt ride assist & throttle gets you up to 20 mph. The frame is made of 26" steel and the drivetrain is single speed. The wheels are 26" double wall and the tires are Kenda Flame Cruiser Tire 2.1. The frame is size medium and fits 5'4" to 6'2".