Gator Black Bell Mask With MERV 13 Filter, 20-21"

This wind instrument double-layer cover is designed for bell sizes ranging from 20 to 21 inches. It's been made to meet performing arts aerosol study recommendations. It's perfect for the marching tuba and other large bell instruments. The bell mask covers bell openings of instruments to help greatly reduce the spread of aerosols. The breathable design has little to no back pressure or acoustic loss during performance. Equipped with a removable MERV 13 filter, it's secured with an elastic closure and cord lock. Made out of non-woven polypropylene fabric, it's reusable and hand washable. Be sure to measure instrument bell before ordering to guarantee the best fit.Disclaimer: These masks have not been tested by the FDA, CDC or any other official organization to conclude that they prevent the transmission of viruses.