Cloth Ear Cushion Cover for David Clark and Similar Headsets Works with most David Clark, Softcomm, Avcomm, ASA, and Rugged Air headsets. Not recommended for ANR headsets. Washable ear seal cover Designed to absorb moisture in hot, humid weather. Not for use on the David Clark H-20 Series Headsets. Not recommended for use on ENC / ANR Headsets.