Mounting a bicycle with a large front wheel required finesse. Once one had mounted, a smooth roadway was important in order to stay aboard. This invention replaced “bone-shakers,” or cycles with two equal-sized wheels of wood with iron tires. Introduced in the 1870s, these early velocipedes were usually the province of men, simply because women’s clothing was not suitable for riding astride. Then, too, exercise by women was still suspect in the early 20th century. Riding such a device was dangerous; the roads were bumpy, and falls were common.