Comfort/Fit
The Kelty Revol 65 has large blocks of padding on the back and shoulder straps, contained by a mesh fabric. The larger the blocks, the greater the potential for bunching, but this feature will be appreciated by users going on short trips with heavier loads that are concerned about close contact between the back and pack. These large blocks lower the surface area that contacts the back, which increases air flow but also increases the potential for pressure points or pinching. The sternum straps also have a limited slide range. 

Storage
The Revol’s tall construction makes it difficult to fit wide items in the body, but it does have straps on the bottom, which helps. The body compartment has two entries, a zippered entry on the bottom and a cinch closure on the top. There is a medium sized back sleeve, which is closed with a zipper. 

Stability
The Revol has a high, narrow body shape, which gives it a high center of gravity when fully packed, precipitously so when over packed. Smaller users may find that a fully (or over-) packed Revol extends over their heads, a hazard in tight terrain. The height-to-width ratio for this bag is definitely skewed to the tall side, maybe even the most skewed in this test set.  

Durability
There are no obvious red flags in the durability department, which speaks more to the heaviness of the construction. It is the second heaviest bag in the set. A possible exception is the string pull the cinches the top opening of the body compartment, which is very thin. 

Extras
The Kelty Revol 65 has a conspicuous lack of extras, including the whistle that seems to ubiquitous on the sternum strap of every pack in America. It does have two gear loops on the back for trekking poles or ice tools. The brain is detachable, but doesn’t convert into a small day or fanny pack.