Nidecker Lunar Heel Lock Shoe Focus Burgundy 2019/20 Ladies Specifications FlowFIT - a combination of Nidecker and Flow knowledge and experience with technologies like BOA guarantees the best fit with perfect balance of comfort, support and control Boa H3 Coiler - an improved popular tightening system. Use the swivel BOA wheel to tighten the shoe as you need it, quickly and easily without having to remove the Heel Lock Boa - a new additional tightening system