The Peltor H31P3E300 Optime I helmet-mounted hearing protector provides reliable hearing protection with an SNR of 26 dB. Designed for attachment to safety helmets via a 300 mm P3E mounting arm, this ear defender is suitable for environments with moderate industrial noise, such as workshops, printing houses, and outdoor work. Its low profile and lightweight design ensure comfort during extended use, while the wide, comfortable sealing rings are filled with a unique combination of liquid and foam for optimal sealing and low pressure. The H31P3E300 is a genuine Peltor product, ensuring quality and performance.