A variety of workers can get a custom fit with this earplug, ensuring compliance and optimum protection. Howard Leight MultiMaxT multi-size foam earplugs have a high visibility yellow end for smaller ear canals and a bright coral end for larger ear canals. NRR31. Sold 200 pair per box. Meets ANSI S12.6-1984 standard.  Smooth, soil-resistant skin. Uniquely designed two-sizes-in-one earplug. Choice of which tip fits and works best and is most comfortable for you. High-visibility coral and yellow colors.  It combines high ratings with convenient size flexibility. Two-sizes-in-one makes inventory control easy. Trademark smooth, soil-resistant skin and attenuation effectiveness.