Upgrade to the superior comfort & ergonomic support of an in Form saddle with the Affinity R WSD from Bontrager. A welcome addition to any road bike, the Affinity R WSD features hollow chromoly rails to reduce weight, a gender-appropriate Contour Relief Zone (CRZ) to give added soft tissue comfort without sacrificing proper skeletal support, & comes in three women's specific sizes so you can get the fit that's right for you.