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- Material: [body] 100D nylon, [bottom] 210D nylon
- Volume: [extra small] 42L (2563cu in), [small] 45L (2746cu in), [medium] 48L (2929cu in)
- Support/Suspension: Airspeed Suspension (4mm Lightwire alloy frame)
- Shoulder Straps: mesh
- Waist Belt: mesh, ErgoPull closure
From multi-unit backpacking trips in Denali National Park to minimalist thru-hikes on the PCT, the Osprey Eja 58 Backpack has everything you need for lightweight trekking adventures. A removable daypack lets you take short, exploratory trips from your campsite, and plenty of mesh pockets and gear loops provide the capacity for maps, trekking poles, and snack stashes; an integrated rain cover protects your gear on rainy afternoons and compression straps keep everything under-wraps. But where the Eja truly shines is in the form of the comfort it can provide. The combination of well-ventilated AirSpeed back panel and the light-yet-durable alloy frame brings a lot of breathability by dumping excess heat out the sides while you hike, and ExoForm covers the shoulder pads and waist-belt with mesh and energy gel for the ideal cushion needed over weeks or even months on the trail.