I've been using these religiously for outdoor training. The earbuds have an 31DB NRR. They've been more than adequate for outdoor courses where I've been shooting all day with 8 other shooters on the line. It a nice balance for those of us who like earbuds but know that we lose them too easily. I tend to go with non- bluetooth versions.
Amazon product ASIN B087SCJJQM
Amazon product ASIN B087SCJJQM