The Elvex Muddy Girl hearing protection have a slim profile that makes them ideal in confined spaces and for sports shooting. They have a top of the line headband cushion that provides a high level of comfort and super seal ear cushion for long term comfort. They are ultra lightweight weighing only 8.1 oz. They feature a high performance level of 21 NRR and you can reach 26 NRR when doubling up with ear plugs. They are certified to ANSI S3.19-1974 test standards, by Dr. Kevin Michael, an independent NVLAP laboratory. This model has a Muddy Girl camo finish.