Fila Advantage 19" Sport Duffel Bag, Black/Lime, 19" Duffel, Advantage 19" Sport Duffel Bag

How big is the bag?

Does this bag have structural support to keep the bottom flat, or will it all flop together?

Is there a place on the side for a water bottle? I see what looks like a strap. Also, does shoulder strap have a pad at the top? Hard to see in photo.

the measurements say 10'' high & 10 "wide, but how long (end to end)?