3M Peltor Optime 1 Ear Defenders for Peltor G2/3000 helmet.   

This is for the helmet attach ear defenders only. 
Protection of 26dB. Conforms to EN352-1. 
Recommended for noise levels of between 87dB(A) and 98dB(A). 
Ideal for high frequency noise. 
Perfect for use in environments with moderate industrial noise, such as workshops, sheet-metal shops and printing works, but can also be used to good effect outdoors. 
The natural choice when you need to use all-round protection for both short and long spells. 
Easy to use with the attachment adapted for optimum fit. 
The wide, comfortable sealing rings are filled with a unique combination of fluid and foam, which gives optimum sealing and low contact pressure, ensuring the best possible comfort even during long periods of use.