SUSTAINABILITY Constructed with GRS-certified recycled polyester and PFC-free Durable Water Repellent material Main body uses bluesign(R) approved sustainable fabrics STORAGE: Hydration reservoir sleeve Zippered slash pocket safely stows essentials One large main compartment DESIGN & DETAILS: Top-loading cinch closure provides easy access to all of your gear Compatible with additional Osprey travel and backpacking bags for additional storage and carry options Dual daisy chain loops Durable harness grab handle Padded, mesh arm straps Adjustable sternum strap equipped with whistle Webbing hipbelt can be easily removed or replaced Backpanel provides ideal ventilation and comfort thanks to AirScape(R) mesh-covered, die-cut ridged foam construction