The 27 NRR Tri- Grip® triple flange earplug combines a unique elastomer with a triangular stem for a more natural, secure grip. The earplug has three half sphere flanges, designed to easily contour to the inner ear with virtually no pressure. The Tri-Grip® is designed for all day/ all night comfort. Available in standard size or Tri-Grip® Jr for smaller ear canals.TASCO Corp.,, (800) 343-2311.Circle 310