“We did blind tests with the air frame….. climbing 5.7 sport climbs with a 30-pound load at Big Rock near Riverside, California. Sometimes they climbed with the Cilo’s rigid frame and sometimes with the Air Beam frame.
No one noticed any difference in load transfer to the hips, but each climber said that the air frame allowed more freedom of movement. I also loaned the air frame and pack to ski mountaineers (40-pound packs) and they also said that the air frame allowed more twisting and bending, while still giving support.”
Rock and Ice said it: Equivalent load transfer to rigid framed packs with a better range of motion, lighter weight, and more comfort.
The Klymit Air Beam is built for Motion. Check it out in our packs: http://www.klymit.com/index.php/products-1/backpacks/motion-35.html