So I grabbed this as an alternative to a waist pack. It's durable, construction is good. One size fits all sorta thing. I'm a pretty big guy and it still fits comfortably. The phone compartment is at the top (as evidenced by headphone hole) but might be a bit too close. You'll have a lot of headphone cord hanging out unless you shorten it somehow.

Gets really annoying fast if you're trying to sit back, but otherwise carries a good bit of stuff and keeps it safe. I might not grumble about just one more pocket, but fairly good as-is.