Snap-in ear cushions are standard on all Howard Leight earmuffs Easy to replace ear cup cushions are hygienic, comfortable and extend performance and life of the earmuff Recommended replacement every 6 months with general use, more frequenctly with heavy use Honeywell Impact Sport Bolt Replacement Ear Cup Cushions are an easily replaceable solution that&';s capable of enhancing the overall performance and life of earmuffs. Showcasing the height of comfort and hygienic properties, Honeywell Replacement Ear Cup Cushions are compatible with Honeywell Impact Sport and Impact Sport Bolt Earmuffs. It is generally recommended that owners replace their ear cup cushions every six months. This number may increase depending on general use.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }