The 509 Raid Double BOA® Boots steps up with the latest dual-zone BOA® Fit System. The H4 Coiler tongue dial brings in lace slack quickly, and the M3 side dial adjust the lower zone to offer exceptional fit and performance. Stainless, aircraft-grade braided wire and updated smoother sliding lace guides create a more even and secure fit. W
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Not bad First set of boots had faulty boa lace , warranty replacement was quick and easy to submit. Second set is much better. But I would recommend going with the signal boa lace. Side fore foot lace is difficult to get tight and it seems to get bumped and loosens off during the day . Not a bad boot