30 Pairs Individual Bagged Earplugs for Noise Cancelling. Ultra Comfortable: Made with super low-pressure, slow release, comfy foam, gently fills the ear canal, and creates a secure seal for excellent hearing protection in loud workplaces and jobsites. Hearing Protector: Earplugs are with a high noise reduction rating (NRR) of 38dB, effectively protect hearing in loud events or set up quiet environment for sleep. Ultra Noise Blockers: with a Noise Reduction Rating of 38 decibels, LiteTour noise blocking earplugs are great for sleeping, studying, work, construction, travel, concerts, relaxation, motorcycling, hunting, shooting, loud events. Hygienic and Portable: Individual bagging for easy storage and the small clear Plastic Storage Case for convenience carrying.