These are hands down my favorite sandals ever. I paid more for the original one when that came out. The bass is amazing, the sound quality is great and feels very durable! Things that aren’t so good about the Aonic 50’s (why they don’t get 5-stars): The music doesn’t pause automatically or reduce volume in “Environment mode”, so renders it pretty much useless. I would recommend this product to anyone who fishes a lot like myself. Every little background noise was there and easy to locate. I’m going to try them for another couple of days and if they and the case don’t get to 100% I’m sending back. I added a cadence sensor to the bike and am able to run the zwift app. If they last a summer or two Im happy. Overall they are fine if youre looking for a lighter slipper, but size up.