PROS:
- Able to order by specific waist and inseam (not Small, Medium, Large, etc)
- Size was perfect, exactly as ordered
- Pockets in right places
- Lightweight
CONS:
- Material catches easily on any pointy object
- No rip-stop
- Doesn't breathe well
- Zipper opens around the front, should be back to allow ventilation without removing bottoms.

I live in Arizona and most of my hiking is off-trail so much of my time is passing through plenty of thorny brush. This being the case, I sought pants which breathe well and shrug off brush without complaint, but these pants failed on both points.

POINT #1 - Poor ventilation:
I just got back from a hike on a sunny 50-55 degree day. During the hike I was climbing on steep terrain and my legs were sweating like crazy, so I thought I'd unzip the legs partway to allow some ventilation. Unfortunately, instead of beginning to open around the back to allow air flow when left slightly open, they zip around the front... totally useless when walking through thick brush. In this case, Columbia is like many other companies when it comes to real-world usability... the designers don't actually use the products. The pants I've used in the past always unzipped around the back first... guess I won't be buying any Columbia pants again.
POINT #2 - Catches easily on brush,no rip-stop
The first pointy bush I brushed up against caught hard, leaving an inch-long snag in the pants. Other brand pants I've worn for years usually shrug off even the 'hooks' of a cat-claw with no problem.
CONCLUSION:
For my type of use, I would not buy them again,nor would I recommend them to others.
(Caveat: If you stick to well-defined trails, they may very well be just right for you)
Actually, the only reason I bought these pants was to have something to wear until I lost enough weight to wear my regular hiking pants. I have more than enough pants to last me 3-4 years, but after being laid up for over 4 months due to back surgery, I gained 15 pounds. So until I get back in shape and lose the extra weight, I thought, great, I can order the exact waist and inseam and be on-the-trails.
So... if I hadn't purchased these as a short-term solution, I would return them right now. But not expecting to be wearing them very long, it's not worth the trouble to return them.