Item NO. Proguard Attenuating
ProGuard Custom Fit Attenuating earplugs are supplied with a choice of two pairs of acoustic filters, the filters are very simple to change. Please choose which pair you feel applies to the noise environment you expect to spend most time in. The green filter has an SNR rating of 18dB ideal for moderate noise levels, the orange filter with an SNR rating of 19dB designed for noisy conditions. Other filters are also available - 15dB for low noise areas and 20dB for high, the choice can be made when sending back your impressions.