DESC: Free Shipping. Arcteryx Naos 45 Backpack The Naos 45 Backpack by Arcteryx is the smallest of the Naos series, it is full of functional features and contains no fluff. Radially formed shoulder straps and hip belt, in conjunction with the Spacermesh cushioned MonoFrame and rotating Load Transfer Disc, create the most comfortable carrying system around. Specifications: Weight: 1.8 kgs / 4 lbs (Short), 1.9 kgs / 4 lbs 3 oz. (Regular), 2.1 kgs / 4 lbs 10 oz. (Tall) Volume: 41 l / 2500 cu. in (Short), 44 l / 2690 cu. in (Regular), 41 l / 2870 cu. in (Tall) Extended Volume: 50 l / 3050 cu. in (Short), 53 l / 3230 cu. in (Regular), 56 l / 3420 cu. in (Tall) Features: RollTop closure Fully seam sealed Hydration bladder pocket Laminated map pocket Laminated Molded AC2 Fusion Points Load Transfer Disc MonoFrame back panel Pigment dyed WaterTight zippers Radially formed Binary hip belt Radially formed shoulder straps Removable WaterTight top lid Side access kangaroo pocket Four external compression straps Waterproof ...