CamelBak: READY, SET, ON-THE-GO It’s time to change things up. Our ultralight Arete™ 18 pack features compressible material so it can work solo for short hikes and is small enough to pack away for spur-of-the-moment adventures. Let’s go! FEATURESLight And Durable MaterialsBreathable Air Mesh Back Panel And StrapsZip Pocket In Top Lid2 Side Stretch PocketsAdjustable Sternum StrapWill Fit 15” Laptop