The Osprey Verve for women comes in 5L, 9L, and 13L. There’s also the men’s equivalent to this pack, the Viper. I tested the 5L, but you can also check out a past review of a larger Verve. The Verve and Viper have less storage room than the Tokul, but more compartments to separate your stuff and a flatter, more streamlined look. I found the pack design to be superior: you get Osprey’s AirScape back panel to wick away moisture and provide some air flow, plus the hydration hose is secured with not only a sleeve down the shoulder strap, but a handy magnet that holds it in place. I found I appreciated this feature more than I anticipated. There’s a chest strap as well as a hip belt, and a front pocket and shoulder pocket as well. The reservoir has a vastly different design than that of the Platypus, and it really just comes down to preference. To fill the Osprey, you open a large valve and hold the reservoir flat under the water stream. There’s a sturdy handle by which to hold it and load it back into the pack (in its own compartment, of course). I found it easier to load than the Platypus, but less adaptable with the rest of my gear. If you already have an Osprey backpack however, it’s a breeze to transfer the Verve hydration system to a large pack.