Maybe your inner jogger needs a running backpack? This bag is made from nylon and it is targeted towards women.
From Osprey Europe
Dyna 1.5 w/Flasks - Cascade Blue/Silver Lining - WL
Sigma Sports
Osprey Dyna 1.5 Womens Hydration Pack - Slate Grey
Trekkinn
Osprey Dyna Hydration Vest 1.5l Grey S