I use this for my long runs (up to half marathon distance). No leaks, no chafing, and stays in place with easy access to the mouth piece. I like the font pockets for accessibility as well. Upon ordering I was a little concerned with fit around the chest, but that isn’t an issue at all. I highly recommend letting all the air out when you fill the bladder to cut down on any sloshing sound. However if you have noise canceling earbuds that might not be an area of concern. Great hydration pack!
Very comfortable, no issues with the bladder or bite valve. It's a great pack for my shorter hikes! Really like my purchase