- Wind Instrument Double-Layer Cover for Bell Sizes Ranging 13"Inches. Measure Your Bell Size To Ensure Proper Fit
- Covers Bell Opening of Instrument to Greatly Reduce the Spread of Aerosols and is Made to Meet Performing Arts Aerosol Study Recommendations
- Elastic Closure & Cord Lock Keeps Mask Secured to Bell Opening
- Breathable Design with Little to No Back Pressure or Acoustic Loss During Performance