The Mosquito earmuffs, from North Safety Products, offers wearers light duty protection. It was designed specifically for people who need good protection while exposed to intermittent harmful noises. Constructed to be both durable and extra light weight, the headband exerts low pressure making it comfortable to wear, but firm enough to keep the earmuffs secured and in position. The cups are made of styrene and it is dielectric. The Mosquito earmuffs provide the necessary coverage and protection. ANSI S3.19-1974/CSA Z94.2.