This appears to be an excellent product. I will update my review as I wear the product at work over the winter. Expect my first update in December.

Here's my review, right out of the box, so to speak:

Pros:
*  Thin enough so I won't need to wear pants with a larger waist size;
*  Buttons appear to be sound --- I've had shirts where I immediately reinforced the buttons;
*  Size is what it would be with a shirt --- I wear a medium shirt --- after one washing in warm, there was a little shrinkage but it was not severe, and;
*  Double-stitching, everywhere.

Negatives:
*  Flap button at back (dorsal)--- one button----easy to open but hard to close;
*  No spare buttons

FYI:

1.  There are washing instructions inside the left shoulder.
2.  I have ironing on two light-duty velcro above and below the flap button to make it easier to close.

If this review was helpful, please add your vote.

After two days use:
This is not adequate protection against the cold for really extreme weather. It works best, I think at temperatures between 60 F and 20 F. You will want the heavy weight Carhartts for those conditions.

My last point is that you will need to stitch in the velcro. I tried ironing one velcro patch and sewed in the other. The glue and ironing did not work.