These Compete Audio ear seal comfort covers for David Clark headsets make your aviation headset an even more comfortable cockpit accessory. Designed to absorb moisture, these affordable slip-on ear covers will help keep you cool and dry in hot, humid conditions. Because they're 100% cotton, these double-knit ear covers are completely washable for easy upkeep. Fits all passive David Clark headsets except those in the H-20 Series. Not recommended for use with ANR headsets. Your low-cost, low-maintenance solution for keeping a cool head in the cockpit. If you are unsatisfied for any reason, please return items via Amazon for a full refund.