Wind Instrument Bell Cover - 6-7″ Black Cover with MERV Filter for Trombone & Others

Made to meet the Performing Arts Aerosol Study Recommendations!This wind instrument double-layer bell cover greatly reduces the spread of aerosols with a breathable design with little to no back pressure or acoustic loss during performance. Made of non-woven polypropylene fabric, this cover is equipped with a removable MERV-13 filter and an elastic closure and cord lock to keep the cover secured to the bell opening. Re-usable and hand washable.