Keep your Optime III Ear Defenders comfortable and hygienic with this hygiene replacement kit from 3M. Replace the sealing rings and muffler pads quickly and easily to keep your ear protection functioning at its best. Features and Benefits Maintains comfort and hygiene Extends the product life for an economic solution Quick and simple to replace Kit contains replacement sealing rings and muffler pads which can be replaced in a few easy steps Extends the life of earmuffs Ensures good function and hygiene Avoid wearing uncomfortable earmuffs Pack contains 2 x foam inserts and 2 x sealing rings Contents New sealing rings Muffler pads