3M 1100 Disposable Polyurethane Foam Earplugs With Cord are designed to provide comfortable and reliable hearing protection in noisy industrial and manufacturing environments. Made from soft polyurethane foam, these single-use earplugs expand gently inside the ear canal to deliver effective noise reduction with an SNR of 37 dB. The connected cord helps reduce product loss and allows convenient temporary removal when needed. Suitable for factories, cleanrooms, workshops, laboratories, and general industrial applications. Pack includes 100 pairs.