Lightweight and ergonomic, the Sirrus 24 for women by Osprey is a breathable and comfortable hiking backpack above all. It is tailored to the female form (notably the back panel and hip belt). The main innovation applied to the Sirrus 24 is precisely the integrated construction of the back panel and hip belt, assembled as a single piece. This Mesh construction ensures immense comfort and unparalleled breathability. You will benefit from numerous features such as a waterproof rain cover, ice axe attachments, trekking pole attachments, and external compression straps to carry necessary gear without losing internal storage capacity. This Osprey hiking backpack is, of course, compatible with Hydraulics™ hydration systems.