Ear muffs for 3M helmet model H9P3E NRR23 Features : 0 Yellow cap. See clearly while working 0 Reduce noise NRR : 23 dB 0 suitable for use. Reduces noise in noisy areas with an average of 98 decibels 0 Easy to install or remove thanks to spring-loaded feet that fit the ears. 0 The earcups can be adjusted to fit and fit comfortably, no. Press on 0 The legs that cover the ears are strong and stable.  0 Resistant to heat and cold in all working conditions, even for long periods of wear. 0 The earmuffs will not interfere with your head when not in use. 0 Can be combined with a safety helmet. High quality all models of PANGOLIN Packing size : 1 piece / box SKU: EARS0002 Category: Ear Protection