A good bike seat, also known as a saddle, must meet the purpose for its use and fit the person who is using it. There really isn't a one-size-fits-all when it comes to choosing the best bike saddle, especially for women.
Designed for Women
The bony structure of a woman's hips and pelvis call for a bike saddle that supports slightly wider hips and sit-bones, also called "ischial" bones. Most quality brand-name bike and sporting goods stores will carry gender-specific saddles. Those with center slits are a popular choice because of the comfort and protection provided to the perineum.
On the Road
Performance saddles are designed for the road. They are designed with a long, narrow nose and have little or no padding because the forward leaning position of the road bike puts minor weight on the sit bones. In addition, the narrowness of the nose tends to not chafe the inner leg. Performance saddles for touring tend to have a little more padding.
Hitting the Trails
Some saddles are designed for mountain biking. Because of the intensity of the use, combined with the potential for jarring, these seats are made with extra padding, tough covers and a streamlined shape.
Exploring the Neighborhood
A wider, cushioned seat with a short nose is a top choice for female recreational riders. Some are designed with springs under the saddle or on the seatpost.