Crye’s combat uniform is perhaps their most famous product. It is meant to be a purely offensive uniform featuring plenty of stretch material, especially around the knees and back for enhanced mobility. The shirt has a T-shirt material-like torso for operator comfort and to wick away sweat when worn underneath body armor.
Army Custom:
Multicam Combat Shirt:
Torso material is thinner and less “elastic” than thicker material on CAG prototype.
Elbow Pads:
Elbow pad pockets also have black felt material lining (maybe for velcro hook on pads?) the inside which prototype does not have.
Arm Pockets:
Arm pocket does not have secondary internal pocket that Field Shirt has.
Tag:
Multicam Combat Pants:
Kneepads are removable and unlike later G3 version there is no covering flap for the kneepad hole. Vertical kneepad location is adjustable using in strap located inside waist pocket.
Tags:
Data tag is located under the zipper fly. 
On back facing side of cargo pockets.
Navy Custom:
AOR1 Combat Pants:
AOR1 Pattern, same pattern as on trousers here.
Kneepad Adjustment Straps:
Vertical kneepad location is adjustable using in strap located inside waist pocket. This mechanism is also present on the Army Custom version.
Kneepad Area:
Uncovered Tweave Durastretch material.
Tag:
Tag is located on one of the waist pockets on the inside since the fly uses buttons. Actual waist size slightly larger than number on tag like commercial vanity sizing.
Usage Photo:
Army Custom vs Navy Custom Comparison:
Combat Pants:
Cargo Pockets:
Like the field top, the Army Custom closes with velcro while the Navy Custom has buttons and a BDU-like internal flap.
Fly Closure:
Army Custom closes with a zipper while Navy Custom closes with buttons.
Belt Loops:
Navy Custom has larger belt loops than Army Custom.
Thigh Pocket:
Identical, except for small buttonhole on side of Navy Custom version.
Ankle Pocket:
Identical, except for small buttonhole on side of Navy Custom version.
Back Pocket:
Identical between the two versions.