The fizik womens r5b donna road shoe shares the same features that make the mens r5b such a great shoe but tailor made for women with specifically designed panels and a narrower heel cup and lower forefoot volume the boa ip1 closure system makes adjustment on the go quick and easy and its designed to be lightweight and aerodynamic a sailcloth strap allows you to customize the fit around the toes for maximum comfort and minimum movement the r5b donnarsquos carbon reinforced nylon outsol