The Fizik women’s R4B Donna Boa Shoes are, essentially, a slightly less “pro” version of the R1B shoes turning cranks in the peloton for 2016. Like its pro-tier counterpart, the R4B has a low-cut ankle profile that allows for unrestricted pedaling motion and helps to trim some grams off the overall weight. Unlike the R1B, the R4B’s outsole is a carbon-injected nylon, and instead of a complete realization of the Volume Control system, the R4B features an asymmetric wrapping closure. The R4B’s fastening system is built on a single Boa IP1 dial that pulls the upper across the foot, wrapping it rather than just cinching it down. This helps eliminate long-ride discomfort by evenly distributing the pressure across the entire foot. While we won’t be surprised to see this asymmetric design eventually appear across Fizik’s shoe line, only the top-tier R1B currently features a similar construction. The shoes are finished with two hook-and-loop straps across the metatarsals and toe box, allowing targeted volume in the areas that are prone to discomfort caused by restriction.
Upper Material: microtex
Closure: Boa IP1, 2 hook-and-loop straps
Footbed: Fizik Cycling Insole
Sole: Injected composite carbon vented
Cleat Compatibility: 3-bolt road