The development of the diamond frame Safety Bicycle made it possible for more people to ride than ever before. The drop frame design was specifically intended to make cycling more appealing to women.
Wearing a long skirt, for example, you could easily mount this Chicago Republic Model A by stepping through the frame and sitting on the seat. To ride, all you had to do was put one foot on the pedals and push off with the other, then let the pneumatic tires provide a comfortable, vibration-free experience. Skirt netting as well as a chain guard kept your dress out of the spokes and other machinery.
This was also a fixed-gear bicycle. As long as you were moving, the pedals kept turning. There were no brakes, so your only method of slowing down was to backpedal.