Low-end compensation, medical/dental/vision insurance provided but not impressive, no 401k match, etc. Things you would expect from a smaller company. Nuun stands on the shoulders of young, enthusiastic employees, but the low-end compensation in an expensive city like Seattle can be tough for them.
Frequent changes in top-level executive personnel leads to frequent changes in company culture and direction. This volatility can be a good or bad thing depending on your personality.