The foam tips are the problem! - ISOtunes Sport OPMOD CALIBER True Wireless Tactical Earbuds With Bluetooth, 25 NRR

Are my ears just that much different than most folks?! I do not understand how these "In the Ear" style buds (for shooting specifically) are generally rated so well. And these are no different than others I have tried, namely AXIL. They're all pretty much useless for the same reason! They all use the same style "foamy" tips that are all but impossible (for me: impossible!) to get seated deeply enough into the ear canal to adequately block the noise from a firearm discharging. Furthermore, these specifically do not function (turn on or off) accurately using the "Touch" system employed.
One slight positive for this brand is the ability to purchase different style replacements. I bought a five pack of the Isotunes Trilogy Universal replacement tips that fit this brand earbud. They are a bit longer and allow for more squeezing of the tip of the foam so as to get it (with a bit of work) further into the ear canal. Unfortunately, you still have to contend with the annoying "Touch" system of operation that doesn't work particularly well.
All in all, it's another waste of time and money for me. I'm not willing to spend the hundreds of dollars for a professionally fitted pair so, I will be content to use my electronic muffs from now on. For twenty bucks I will be happy to send anyone all three pairs (two AXILs and this one) of the "In Ear Buds" I have collected that will only serve to remind me of the money I have wasted on this style of hearing protection!