They work at least - Walkers Silencer In The Ear Plugs Pair, 3 Sizes

So I bought a pair for my girl and I. Sometimes at a match it’s nice to to have the overhead ear muffs on and that’s why I bought them. Having said that hear is my complaints. Sound quality is ok. My Howard leights for $60 are much better. The rubber ear inserts break/crack fairly early on. Worst part is the battery life. Even making sure I turn them off they only last 2 weeks or so. I’ve changed mine 4 times already and my girls pair twice. One day at the range outs both were dead. My buddies pair quit working all together within 2 months. If you buy them I recommend removing the tiny batteries after every use.