Nidecker Aero Coiler Shoes nickelgrey 2019/20 Specifications FlowFIT - a combination of Nidecker and Flow knowledge and experience with technologies like BOA guarantees the best fit Boa H3 Coiler - an improved popular tightening system, using the swivel wheel to tighten the shoe very quickly and easily without taking off BFT Gravity - New, durable all-rubber sole designed to support your foot anatomy and give an authentic bare feel