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The AirSoft® multiple-use earplugs feature an improved design that incorporates a series of patented, noise-blocking fins within the pocket. As the air pocket compresses in the ear canal, these fins interweave to create a noise-blocking barrier optimized to the wearer's ear canal. This facilitates more dependable attenuation from one user to another. A fourth flange has been added to the earplug’s profile, and the center shaft has been stiffened to facilitate insertion and removal, and to assure a more consistent fit.

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