Designed for people who are exposed to intermittent noise, E-A-R CAPS® offers superior protection with its semi-aural fit. Soft foam caps mold easily for a positive, custom fit and constant attenuation. Bright colored band and plugs for easy compliance checks. Replacement caps sold separately. Blue band with yellow cap. NRR 17dB. Tested to ANSI S3.19-1974 standard. 10 per box. Sold by the each.