Trek's WSD bikes feature women's-specific frames, wheels and components for a wonderful, custom fit and amazing ride. For example, the frames sport short top tubes, tall head tubes, steeper seat-tube angles and decreased head angles. And certain bike sizes boast 650c wheels. These details ensure top-notch handling, comfort and pedaling efficiency. Complementing the great ride are proportional crankarms, anatomic saddles, narrow handlebars, short-reach controls and small-diameter grips. Take a test ride and experience the WSD difference!