New mask information supports a recommendation of upgrading from cloth masks to paper surgical masks (3-layer) or KN95 masks (5-layer). A single mask can be worn all day, but it is important to bring a second for backup. Plan for two masks daily.
Paper surgical masks approved for school use:
Three layers of filtration, with electrostatic charge to capture smaller particles. Single use disposable. Kid-sized examples at Amazon
. Adult-sized examples at Costco
KN 95 Masks or equivalent approved for school use:
Five layers of filtration and may be discarded after a single use. If needed, they can be saved and reused
after a week if stored in paper bags. Mark the paper bag with the student's name and the day of the week to avoid reusing too soon. Discard if torn, dirty, or damaged, or after three uses.
Kid-sized examples on Amazon
Adult-sized examples at Costco
Not acceptable for school use:
While high-quality three-layer cloth masks are available, they vary widely in quality and degrade over time. For this reason, cloth masks are not acceptable for school use. We are asking all students to wear three-layer paper surgical mask or a KN 95/N 95 level mask as described below.
Not acceptable at school and to be avoided outside of school:
Bandanas or gaiters
Any mask with a “valve
.” Valves release unfiltered virus from the wearer to the world. These are not legal in Contra Costa County.
Face shields alone—these can be used in addition to a face mask, but not as a substitute.