I bought these for my boyfriend, I’ve only used them occasionally but I love them. I plan to buy myself a pair. The slide design is incredibly simple (and genius) and truly blocks out an amazing amount of sound on the higher level but you can still hear others talk on the lower lever which is nice so you aren’t shouting at them by accident. I have previously bought and use the high fidelity earplugs (clear) for airplane trips, chain saw work, long car trips, etc. and am happy with them but they hurt my ears after an hour or so. I think the slide ear plugs are more comfortable, I can wear them for longer periods of time, and for a wider variety of situations because of the slide settings. I’m not a fan of loud noises in general and like to block out the world when I study and these are a good option for that too. My bf uses them at his engineering/manufacturing job on the floor and for yard work, so far, and loves them as well. Plus they look great in your ear and discrete. Great product.