This pack has all the features I wanted just fell a little short in the execution.
Pros, sizing is nice. At 6'2" 180lbs I got the large, it fit well. The chest bottles were low on my ribs not in front of me. A good amount of storage and all pockets are easy to get to. Found some great videos for the various ways to carry poles (I don't) and options for running a hydration bladder. Hip pockets were large enough for lunch and Samsung Galaxy S6. A big bonus was the zippered "pack" section has nylon backing and not mesh so your gear doesn't get sweaty.
Cons. Rough mesh fabric with not much stretch. The chest holsters overlap the hip pockets making it difficult to fit soft bottles inside of them while on the move.
Velcro pockets in the main compartment are only good for light, large items, so not your keys...
Some features I would like to have removed were stitched to the pack ( trekking pole carry system.
Which leads me to why I'm returning the pack and poor review. The shock cord system on the top section of the pack is very VERY abrasive and cannot be removed. Why such a rough patch of material against your body? the housing for the shock cord wore a hole in my Zoot vest and badly irritated my shoulder.
Also the buckle on the lower section of the front scuffed my vest badly right below my chest.
If the fabrics were a softer and those 2 major problems fixed I would have rated this pack at 4.
One run, 2400' vert 10 miles.