For hearing protection at work and home, these 3M E-A-R Classic earplugs are designed with slow recovery foam, engineered to protect against noise. The comfortable cylindrical shape with a textured surface provides an effective seal with greater friction to prevent slippage, even with jaw movement The soft energy absorbing foam offers a low equilibrium pressure, expanding to the shape of the wearer's ear canal providing a comfortable easy fit and an effective acoustic seal The moisture resistant foam enables them to remain fitted, even in warmer conditions as they are less likely to swell through moisture absorption Providing noise reduction to 28 dB SNR and fully tested and approved against EN 352-2, the earplugs are compatible for use with the 3M E-A-RFit Dual-Ear Validation System