3M ear disposable earplugs e938-1 offer excellent protection (NRR 29Db), have an easy-to-use cylinder shape, are made of soft, low-pressure PVC foam and are moisture resistant. These useful non-allergenic earplugs are also non-flammable, and their bright yellow color assures compliance. 3M ear classic earplugs provide all-day comfort. 200 pairs per dispenser.