The Alteo 50 pack from The North Face is a perfect large pack for any backpacker who is sick of overheating and dealing with a sweaty back. New for Spring 2011, the Alteo 50 is designed with a Windtunnel back panel that takes ventilation to the next level. The North Face has also given this pack an air-channeled lumbar zone which easily manages the load while keeping you cooler. Not only does this pack help keep you comfortable in warmer conditions, but it is extremely lightweight due to its mini-ripstop pack fabric. With tons of pockets and lots of space, the Alteo 50 from The North Face is an excellent option.