3M™ Foam Earplugs 1100 BOX CSA Class A 100% polyester birdseye knit

100% polyester birdseye knit

For higher-risk sites

Moisture-Wicking: Draws moisture away from your skin to help keep feet dry

built for utilities

Acrylic fleece inside layer insulates while drawing perspiration from your feet

3M™ Foam Earplugs 1100 BOX CSA Class A 100% polyester birdseye knitNoise Reduction Rating (NRR) of 29 dB, CSA Class AL Test compatible with 3M E A Rfit Validation System Compatible with the 3M E A Rfit Validation System Dispenser packaging option available for uncorded earplugs CSA Class AL One size fits most *U. S. EPA specifies the NRR as the measure of hearing protector noise reduction. However, 3M makes no warranties as to the suitability of the NRR for this purpose. 3M strongly recommends personal fit testing of