HEAROS Ultimate Softness Series Foam Ear Plugs are made in a proprietary formulation of polyurethane foam. The ear plugs have been tested and certified to provided a Noise Reduction Rating (NRR) of 32 decibels. The hypoallergenic foam provides very comfortable and secure overall fit and are made with a beige color to provide an inconspicuous wear. They are engineered to be a slightly smaller size to provide protection for those with a smaller ear canal. The foam ear plugs are to be used for all noise reduction and hearing protection purposes. Whether it is blocking out snoring, protecting your hearing at a concert, or trying to stay focused while studying, these are the perfect all around ear plugs.