Verishield 100 Series Passive Earmuff Vs130 30 Nrr Black Over The Head. Large dimension range provides comfortable fit that is 17% more adjustable than earlier versions. Wide cup opening area increased by 16% over earlier versions. New unique memory foam combines denser and softer foam than previous models suitable for wearers with sensitive ear canals or for wearing with hearing aids. Air Flow Control technology for optimum attenuations across all frequencies. Available in over-the-head hard hat and neckband styles Color=Black Mounting=Over-the-Head Noise Reduction Rate (NRR)=30 dB Order Includes 1 Each of 1 Each