What activities is B2 Mask designed for?

B2 Mask can protect you during lots of activities, including normal use going about your day, as well as light to moderate exercise.

B2 Mask can protect you during lots of activities, including normal use going about your day, as well as light to moderate exercise. You can certainly wear the mask during strenuous exercise, however wearing any mask during this kind of activity can generate heat and moisture in your mask, making it uncomfortable to wear.