Howard Leight Industries' MAX Earplug is made of a soft meterial formulaton, is easy to insert and comfortable to wear. The earplug has a NRR of 33 dB as verified by independent NVLAP tests. The flange of the bell-shaped curve closely follows teh contour of the ear canal entrance and counters the tendency of some earplugs to back out of users' ears. The major benefit is increased wearer comfort over longer periods of time. For users, this means reduced risk of damage from prolonged noise exposure and for safety professionals, increased voluntary compliance to hearing protection program guidelines.