The Exos 48 splits the difference between the 58's thru-hiking prowess and the 38's ninja-like agility. It works great for weekend trips and depending on your packing style can go way further. The incredibly comfortable Exoform harness and AirSpeed ventilated suspension combine with trail-friendly features like Stow-on-the-Go trekking pole carry to make every backpacking trip as comfortable and enjoyable as possible. Our All Mighty Guarantee means you can rest assured we've got you covered if anything happens on the trail. Stripped weight - 2.27lbs, 1.03kg. Read the great review of the Exos/Eja from Andrew Skurka at Outside Magazine.SpecsLoad Range: 20 - 40 lbs. VolumeDimensionsWeightSM2746 in3 / 45 l29.13h x 15.75w x 12.6d in.2.55 lbs.MD2929 in3 / 48 l31.1h x 15.75w x 12.6d in.2.57 lbs.LG3112 in3 / 51 l33.07h x 15.75w x 12.6d in.2.6 lbs.Fabric:Main100D High Tenacity NylonAccent100D High Tenacity Nylon Triple Check DobbyBottom210D High Tenacity NylonKey AttributesULTRALIGHTUltralight design and materials plus the ability to strip weight by removing sleeping pad straps, compression straps and the top lid.AIRSPEED SUSPENSIONTensioned backpanel keeps the weight in the pack off of your back, enabling highly ventilated carrying comfort.FLAPJACKETtrip the removable floating lid and replace with the fixedFlapJacket to protect your gear from the elements and minimize weight.FeaturesRemovable floating lid with top-and under-lid zippered pockets for storing smaller itemsIntegrated FlapJacket protects packed gear when top lid is removedStow-on-the-Go trekking pole attachment allows you to stow your poles in steep terrain or whenever you need your hands freeDual access stretch mesh side pockets for storing water bottles and other gear with InsideOut side compression strapsFront stretch mesh pocket stores rain gear for easy access when skies darken, or wet gear after the downpour stopsTop lid web loop attachment points for external gear storageIce axe attachment with bungee tie-offRemovable sleeping pad and side compression strapsAccessory cord attachment points for external gear storageSternum strap with integrated safety whistleCarry InformationULTRALIGHT AIRSPEED SUSPENSION4mm Lightwire alloy frame3D-tensioned breathable mesh backpanel with side ventilationEXOFORM HARNESSSeamless layered mesh provides improved comfort and cushioning15 mm adjustable slide sternum strapStretch mesh energy-gel pocketEXOFORM HIPBELTErgoPull closureSeamless layered mesh provides improved comfort and cushioning