Inspired by Osprey's AntiGravity™ technology, Stratos & Sirrus provide a fully adjustable AirSpeed™ ventilated back system which combines single piece construction of the backpanel and hipbelt with highly breathable suspended mesh. This allows for increased comfort in warm weather, even with a heavy load. The Sirrus backsystem offers impressive women's specific fit, with an ergonomically shaped backpanel, hipbelt, harness and yoke.
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