I think the sun will get them.
I used one for washing my truck and as a black tank flush hose so I left it laying outside under my fiver while I stayed in Phoenix last winter. One day I hooked it up and glanced over at it just as a section ballooned up and then burst. This was winter so it was not exposed to summer 100+ degree temps. These things have a 'hose within a hose'. My impression was that the sun deteriorated the outer cloth-like shell, which provided support to the inner hose, and once that was breached, the inner hose had nothing to stop it from ballooning out till it popped.
I personally would not use them for drinking water hoses. They don't seem to be made of the same rubber material as my white hoses (obvious I know), so I don't know if it's safe for that. I would use them for black tank flushing, etc, but would not leave them outside where they could be affected by the sun.