Ferrino Boulder 35
Here's what other sites are saying:
Men and women are built differently, so buy the ergonomical Ferrino USA Women's Boulder Backpack if you prefer wearing panties to boxers. The durable Boulder's flexible steel framework evenly distributes weight onto the padded waist-belt and shoulder straps for an overall comfortable fit when hiking or backpacking. Plus it features a sleeve to place your hydration bladder, and plenty of pockets to stash and organize your small essentials.