Over the long haul, going ultralight and carrying a pack without a Strengthive suspension system uses more energy than you save by cutting a few ounces. With the introduction of the Osprey Exos 34 Backpack, you can pursue your ultralight adventures with a Strengthive, ventilated suspension system in a super light package. The Exos 34 is a specialized lightweight pack with all the features you would expect from Osprey; a modified aluminum Airspeed Suspension system, padded BioStretch Harness and Hipbelt and plenty of pockets to keep you organized and your must-haves" at your finger tips. The Exos 34 can comfortably carry up to 25lbs, making it ideal for lightweight weekend trips and long day hikes.