Durable heavy-duty Honeywell Supervizor SB600 1002297 Browguard with Ratchet Headband. Easy to replace and fit visors. Visor selection can be tailored to the specific hazard/application: mechanical, chemical, heat etc. Those items are compatible with the complete range of helmet mounted earmuffs including Bilsom communication earmuffs. Compatible with a wide range of helmet designs.