The manual says ...
-------------------
3.3.6 NEW: Other Safety Recommendations
At events, the pure anticipation and excitement of being at the competition sometimes overshadows common sense and safety fundamentals. One safety area that teams sometimes overlook is the particular need to wear appropriate and proper clothing when working or just hanging around the robots. In addition to the ANSI-approved safety glasses required for eye protection, FIRST also highly recommends that team members and mentors:
Dont wear loose or baggy clothing near the robots
Wear proper shoes to protect feet and toes
Wear gloves to protect hands and fingers when carrying the robot or handling the robot crate.
Tie back long hair so that it will not get caught in the robot or machinery
-------------------
If your hair is long enough to be tied back, tie it back.
