The Sirrus series offers women"s fit in a ventilated technical day pack. Women"s harness, hipbelt and tree torso sizes provide superb sizing and comfort, and are complimented by great colors and graphics. The Sirrus 36 is a great pack for full day adventure and also offers fixed top pocket with twin zippered pockets and dual vertical compression, top loader, single ice axe attachment, large front zippered pocket, 2x zippered fabric hipbelt pockets, front panel access to main compartment, 2 side mesh woven pockets with insideout compression, upper side compression straps, integrated rain cover, stretch woven backpanel, stow on the go trekking pole attachment, and is also hydration compatible.