Nidecker Shoes Onyx Coiler black 2019/20 women's Specifications FlowFIT - Combining Nidecker and Flow knowledge and experience with technologies like BOA ensures the best fit boots with a perfect balance of comfort, support and control. Boa H3 Coiler - Enhanced Popular Tightening System, Turn the Wheel to Tighten Your Boot As You Need It, Quickly and Easily Without Removing Your Bronze-Level Thermo Heat Moldable Liner - Anatomically Shaped