MAX 1 (NRR 33) pre-shaped foam earplugs feature a smooth outer skin for maximum user comfort. The NRR 33 rating makes the MAX the highest rated disposable earplug in the U.S. The smooth, soil-resistant skin helps prevent dirt from penetrating the surface prior to insertion. Attenuation tested in accordance with ANSI S3.19-1974. Coral color. Individually packed in poly bags, 200 pair per box. Howard Leight Max Disposable Earplugs from Sperian's range of personal protective equipment (PPE) are the most-used polyurethane-foam ear defenders in the world. Offering the best hearing protection in their range (NRR of 33) of disposable earplugs the Leight Max are designed for comfort and long lasting use; with a bell design that serves to prevent the plugs backing out of the ear canal, while its foam design makes it incredibly comfortable for prolonged use. These Max single-use earplugs are a great choice for auditory protection in the workplace. Max disposable ear plugs are a perfect solution for industrial workers operating noisy equipment, or for those working at one-off events where sound management is a definite health and safety concern - agriculture, construction, forestry, manufacturing / factory work, the military, mining, chemical plants, entertainment (music venues) for example - can all gain an extra level of protection; ensuring your workers can hear you for years to come.