Magid Glove PH500HB Precision Safety Ear Muff Hearing Protector, NRR 20 Decibels Precision safety ear muff hearing protector Noise reduction rating upto the 20 decibels These ear muffs have economical protection with an adjustable design for custom fit The hat has a fully cushioned brow pad and accessory slots to accept attachments Soft washable pods for continued use