The load dispersion technology, as Mountainsmith has termed it, is really fantastic. No overheating, sweating, as the dispersion really works well. I have used this for scientific research data gathering. I use the chest strap to hold my large GPS, everything on the pack is easily adjustable, and the interior of the pack allows for a bladder and doesn't have too many obstructions inside the pack.
This review was written in the old system and had content requirements that are different than reviews written today.