Foam Earplugs – NRR 33 provide high-level hearing protection designed to reduce exposure to loud and hazardous noise environments. Made from soft, expandable foam, they conform comfortably to the ear canal for a secure fit and all-day wear. With a Noise Reduction Rating (NRR) of 33 dB, they help minimize noise from machinery, tools, and industrial equipment. Ideal for construction, manufacturing, landscaping, and general workplace hearing protection.