Made from a "Super" soft, low-pressure Polyurethane Foam that provides incredible comfort. Exerts very low pressure on the ear canal. Tapered and smooth design allows for quick, easy and positive insertion. Bright purple plugs and bright yellow cord for easy compliance checks. Extended length allows for quick and simple removal and makes earplug more visible from a distance. Available with or without cord. NRR= 33dB, CSA Class A(L) - Tested at a NVLAP accredited laboratory.