The Levity 45 Rucksack from Osprey is the perfect combination of lightweight, advanced materials & design. Made from ultra-lightweight fabrics & featuring an Air Speed trampoline mesh back system that lets your back breathe even when you are pushing yourself. With the Exo Form mesh hip belt & harness system, you get a comfortable fit so you make sure the bag doesn't weigh you down even when it's full. With lots of pockets & access points, there is plenty of room for all your gear.