3M PELTOR OPTIME II earmuffs for helmets protect against higher noise levels. Suitable for 3M PELTOR series helmets. Can be used in three positions: working, ventilation and so-called parking position. Sufficient empty space inside the earmuffs, made of durable ABS material, helps reduce moisture and heat build-up.Attachment for visor and rain cover. Suitable for both long-term and short-term wear. The earmuffs can also be combined with other head protection equipment. Standard noise suppression factor (SNR) 30 dB. Application: the earmuffs are suitable for wearing in environments with strong industrial noise, in construction, near production equipment, in airports or during agricultural work. Standards: – EN 352-1 – Hearing protectors. General requirements. Part 1: Earmuffs