If you are wondering what the differences are between these two packs you came to the right place. Let’s start with specifications as provided by Osprey: Ellipse Flare Volume 25 liters (1526 cu.in.) 22 liters (1343 cu.in.) Weight 1 lb 6.9 oz (0.65 kg) 1 lb 9 oz (0.72 kg) The weight of each bag…