The disposable 3M earplugs 1100C provide a noise reduction of 37 dB (SNR). They are made from a stretchable, self-adjusting, and hypoallergenic polyurethane foam that ensures low pressure in the ear canal. The conical shape of the plugs adapts to most ear canals, making insertion easier. The smooth, dirt-repellent surface contributes to better hygiene, longer durability, and increased comfort. The earplugs come with a convenient aluminum storage box. This product meets the safety requirements of the European standard. Key features: Functions, Type: Disposable item, Signal-to-noise ratio (SNR): 37 dB, Product color: Orange, Material: Foam, Intelligent ergonomic design: Yes. Packaging information: Packaging type: Blister pack, Quantity per pack: 10 pieces.