What Our Gearhead® Experts Are Saying: "The Sirrus 34 is that rare pack that feels stable and breathable at the same time. The Airspeed suspension really shines on warm climbs, and the panel access and rain cover make it an easy grab for everything from day hikes to overnight trips."When the trail turns steep and the day stretches long, we load up the Osprey Sirrus 34L Backpack for balanced carry and ventilated comfort. The women’s-specific Airspeed suspension system lifts the pack away from our back, keeping airflow high and sweat low. Thoughtful organization—including a lower sleeping bag compartment, zippered hip belt pockets, and internal storage—makes it easy to find what we need on the move. Dual compression straps stabilize heavy loads, and the included rain cover ensures we’re ready when the weather turns. Whether we’re hiking canyon switchbacks or trekking to the next hut, the Sirrus keeps the journey light, cool, and organized.