As of this publishing (Sept 2021) masking is required for anyone entering the studio regardless of vaccination status.
Nothing would make us happier than to give the masking issue back to each person in the studio to manage according to their own risks and those of their loved ones. But, for now, thank you for masking in accordance with the  CDC recommendation  for masking of both vaccinated and unvaccinated in areas with “substantial and high transmission” of COVID-19. Massachusetts is currently “high transmission”.