The Firearm Blog reviewed this hearing protection. While earmuffs are considered the best, when you have to use something simple, earplugs would do well. I've been using SureFire earplugs and the articles does compare both.
http://www.thefirearmblog.com/blog/2015/08/17/review-prosounds-x-pro-hearing-protection-earplugs/
From: The Firearm Blog
