If you buy a good bike, you get a good seat. In fact, you might not even give the seat a second thought and start logging big miles immediately. And, if you develop pain and discomfort, you might cling to the notion that it can't be the saddle and simply keep riding, figuring that if you pedal enough, the aches and pains will disappear.

Unfortunately, bike seats are not that simple. A seat is a bit like a pair of shoes. The same way you'd buy a certain sneaker for a particular foot and sport, you must purchase a saddle that fits your body and your style of riding.

Your seat must fit your type of riding and your body. The faster you ride, the more likely it is you'll want a narrow, racing-style seat. This is because, a fast-riding position on a bike shifts you forward placing more weight on the hands and feet and reducing a lot of the weight on the seat. Also, as you pedal more vigorously, you spin faster and you can't tolerate interference from the sides of the seat.

As you ride more casually, however, such as on a cruiser bike with wide backswept handlebars, most of your weight is planted directly on the seat. Plus you don't pedal quickly at all. These factors make a wide, heavily padded saddle ideal to support your weight and provide cushioning.