Package Contain: 1 Pair of Karam reuseable foam ear plug (Green) (Corded) Complies EN 352-2:2002, ANSI Z 3.19 & ANSI Z 12.6 SNR 31 DB & NRR 21 DB: Perfect For Grinding, Drilling, Milling Operations, Newspaper And Press Industry Etc. Perfect Noise Reduction: Competent To Block Out Loud Noises For Hearing Protection, Shut Out Distractions When Sleeping And Aid Concentration When Studying. Suitable For Protection Against Long Term Exposure To Medium Noise Levels Non-Toxic & Soft Material: Ear Plugs For Noise Reduction Made Of Super Soft And Non-Toxic Foam, Slow Rebound Foam Material Fits Different Ear Canal Structures And Have No Pressure On Ear.