3m 1120 earplugs 200 pairs 3m 1120 the 3m 1120 ear plugs 200 pairs have been designed with soft hypoallergenic pu foam material providing maximum comfort and low pressure inside the ear their special formulation material make these plugs less prone to soak up water in humid environments to maintain performance while the smooth surface helps prevent picking up unwanted dirt for a more hygienic fit 3m 1120 ear plugs 200 pairs