Mack’s Slim Fit Soft Foam Ear Plugs are just like Mack’s Original Soft Foam earplugs, except these come in a slightly smaller size (and a soothing purple color). These ear plugs are molded from state-of-the-art ultra soft foam, with a smooth non-irritating skin that is easy on your ears. When getting a comfortable ear plug is your top priority, Mack’s Slim Fit Foam Ear Plugs are highly recommended for anyone with smaller than average ear canals. They may be smaller, but these plugs are still perfect for blocking snoring and other irritating noises. Their high NRR 29 noise blocking makes them ideal for sleeping, studying, workplaces up to 107 dB, and even motorcycling and travel.