INTERMITTENT NOISE DESIGN: Lightweight & portable patented band design allows earplugs to rest comfortably around neck for quick and easy insertion & removal in intermittent noise environments HYGIENE & SAFETY: Keeping the earplugs around the neck also helps prevent loss or misplacement, and keeps the earplugs away from workplace dirt, liquids and other contaminants INNER-AURAL FIT: Smooth, ergonomic pod design provides a secure, inner-aural fit for maximum hearing safety with a Noise Reduction Rating of 27 ONE SIZE FITS ALL: 1 pair of earplugs per pack; includes 1 pair of replacement pods RECOMMENDED INDUSTRIES: farming, chemical, construction, law enforcement, manufacturing, military, mining, municipal, oil & gas, pharmaceutical, steel, metal, transportation