Come and see our amazing products. Noise-proof and noise-reducing earmuffs for use with V-type helmets. Designed with 2 layers of professional noise dampening foam, high sealing solid cup and the unique double-shell.The helmet mount version can be mounted directly on many industrial safety helmets without the need for additional accessories, can efficiently against noise arising from noisy environments like airports, marine engine rooms, power stations and print works.This protection is based on a two-shell technology that minimizes resonance in the enclosure for optimum high frequency attenuation, sealed ring width filled with a high density sponge for optimum fit and reduced contact pressure. Pls confirm further with us if any query about packing info, inventory status and time schedule.