Osprey designed the Sirrus line of backpacks especially for women, giving them a great option for day hiking or peak bagging with a customized fit. The Osprey Sirrus 24 Backpack is the smallest in the series, with 24 liters of cargo space, enough room for extra clothes and food for a full day on the trail. This is a front loading pack, which means convenient easy access to everything in the pack at once--no need to have to dig through stuff to find what you want. Inside the Osprey Sirrus 24 is a designated pocket for a hydration reservoir, sold separately, plus a rain cover that stores away until you need it. Mesh panels on the side feature compression straps to lock your gear in place, while a harness pocket allows you to safely store your cell phone in case of an emergency. With padded pockets and back panel, the Sirrus 24 Backpack takes you on a comfortable ride.