New for 2018 the Women's Sentry BOA brings a progression- oriented blend of smooth flex and plush ride- all- day fit. Built around a Fun F.I.T liner, the Sentry Boa is designed to be as lightweight as possible without sacrificing moldable comfort or on- the- go adjustments thanks to a single BOA reel. For riders who want a soft, surfy boot backed with BOA, the Sentry Boa is outfitted to keep the progression flowing without breaking the bank.