Gator Cases Double-Layer Aerosol Cover with MERV-13 Filter Fits Bell 4 to 5 inch

Wind Instrument Double-Layer Cover for Bell Sizes Ranging from 4 to 5-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 Fits Trumpet, Cornet, Alto/Tenor Saxophone, Bass Clarinet, & Similar-Size Instruments and is Equipped with Removable MERV-13 Filter (Please See Instructional Video for Proper Fitting and Use)