I'd be interested in your review of these after you've used them. I need something better than the Howard Leight Impact Sport I've been wearing. They don't muffle sound very well. Come to find out, their noise reduction rating is only 22.
Edited to add: I was reading up on these at the 3M website. I noticed this in the details:
*The Noise Reduction Rating (NRR) may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided.