Reduces noise levels up to 31 dB (both corded and uncorded), tested to EN 352-2:2020 Soft energy absorbing foam provides a low equilibrium pressure making it one of 3M’s most comfortable earplugs Moisture resistant making them less likely to swell through moisture absorption Proprietary slow recovery polymer foam helps achieve good acoustic properties Cylindrical shape helps fit most ear canal sizes for reliable seal Exposed cell surface texture resists movement in the ear canal thus minimising the need to often re-fit the earplug Available in refill bottles and bags for use with 3M E-A-R™ One Touch™ Pro Earplug Dispenser, uncorded models only Compatible with the 3M E-A-Rfit™ Dual-Ear Validation System CE Approved