SPARKPLUGS® UNCORDED EAR PLUGS ARE MADE OF EXTRA-SOFT, EXTRA LIGHT FOAM. THEIR TAPERED SHAPE FITS EASILY IN THE EAR CANAL, AND SEALS GENTLY AND SNUGLY WITHOUT PRESSURE. THEY'RE SO COMFORTABLE YOU'LL FORGET YOU'RE WEARING EAR PLUGS. NOISE REDUCTION RATING (NRR) 33 DECIBELS. OFFICIALLY LICENSED EAR PLUG OF NASCAR. SOLD BY THE BOX. 200 CT. BOX.