Gymnasts at Gymcats Gym Dance Cheer are wearing a neck tube like a Buff for training. They can pull it up as needed for a mask. Not as effective as a real mask, but sufficient in many situations in the Gym.
A former gymnast / school principal friend of mine has a mask test that these neck tubes are likely to FAIL — can you blow out a flame through them. With a good mask, you can’t.
But the new BUFF® Filter Tube is promoted as having a 98% Bacterial Filtration Efficiency. That might be better.
Click PLAY or watch it on YouTube.
Buff now makes a dedicated filter mask, as well.
Click PLAY or watch it on YouTube.
Gymnastics Coaching.com 