Pants are fabulous -- Sizing is Personal Preference
584565
Love these technically superior, functional, great-looking pants by OR. Warm and stretchy so you can really move -- up a mountain or up a tree to rescue your cat. Assuming I don't fall into a crack in a glacier, I will test its water and wind resistance in the Nordic circle and report back.

UPDATE: I neither stumbled into a glacier nor got eaten by a polar bear, and I'm pleased to report that these Cirque pants withstood the Nordic challenges beautifully. It was summer and it hovered around freezing, so we didn't get snow, but we got a little rain and quite a bit of splashing from going around in zodiaks. I slid down a mountain of snow on my butt for fun, and the pants held up a lot better than I did. The only signs that we'd scraped over rocks and sticks, etc. under the snow, were dirt stains that washed right out. It was cold and there was quite a bit of wind, and these pants with a thin wool base were perfect for keeping the cold and wind out. For much colder temps, I would suggest double layers underneath.

Ladies, can we be honest about sizing? Amazon and vendors don't always do a great job with helping us determine the right size to order (Amazon chart gives normal sizes; vendor chart measures waist size according to your calf measurement). Most people here think the pants are true to size; which I have learned means that it is often down to body shape and personal preference. I found them to be slightly larger than normal (I'm thin, not curvy, and I like a slim fit), but what works for you depends on your preferred fit and body type. If you like your pants to be fitted to show off your awesomely toned legs and avoid excess material getting in the way of your heroic activities, go down a size (unless you're really curvy). If you like them loose, order your normal US size. Either way, you're good. The material stretches, and the waist is adjustable, so you can add a thicker base layer for the larger size or a thin layer for the smaller one -- if you need one.

For reference, I'm 5'6", 116-118 pounds and normally wear a US size 4. I ordered a small (according to their chart and Amazon reviews) but apparently should have ordered an XS. I can either exchange them, embrace a loose fit or put on a few pounds. It worked out OK because I used lots of layers, and we were very active, so I enjoyed the freedom of movement.
4175535
very impressed with the quality of these pants.
3144970
I did order too large, *but* based on the sizing chart the pants are larger than described. This may be due to the stretch factor of the fabric. I am 5'7" and these are a good 2-3" too long with my standard footwear of flip flops. If I were one to wear heels, I would imagine they would be a pretty good length. The material is thicker than what I expected, so I anticipate a longer lifespan of the thighs (thick thigh girls, you know what I'm talking about). I also anticipated these coming up higher than they actually do - not a deal breaker for me, but something to note. With all of that said the pants are extraordinarily comfortable, I intend to purchase another, just in a smaller size.
2816095
Love these pants, they fit right at the waist which seems to be harder and harder to find lately with the popularity of low-rise. Only thing I'd say is that I need to order a size down from my usual because the waist is super generous.
884222
Just got today and so happy!! Iam 5"4" and weigh 145 I purchased a medium size and they fit nicely. Not to big and not too small. Length was also good which is something I usually struggle with.  Would purchase more , maybe in the future I will. Can never have enough comfy and stylish pants.
2939688
Great pants. They fit well on me (5'6" and 116 lbs) and are surprisingly flattering. I could even say they could pass as office-appropriate pants since they look that nice. Honestly... one of the prettier pairs of pants I own and these are just for hiking! Love that I can roll them up to make them into capris with the button clasp inside. I tried a size 2 at REI and for some reason, the size 2 over there fit a bit looser. Not sure why that is. And the hidden thigh pocket was slightly bigger. Not sure why that is, either.

When hiking the Mist Trail in Yosemite, I definitely felt like I was soaked through to the skin from all the water spray, but it dried so quickly that I didn't even notice they were completely dry again until my mom pointed it out to me. So.. not sure if these pants are exactly "water resistant", but they are definitely quick drying.

The drawstring on the inside of the waistband might not seem necessary for normally proportioned people, but it is a huge plus for me as I have abnormally small hips and normal size/longer legs that make it difficult for me to find pants that fit properly. I'm either constantly pulling up my pants while my legs are comfortably fitted, or my legs feel like they're encased sausages while my waist band fits comfortably. It's always a game of give and take for me when it comes to pants. With these pants, however, I can get a nice relaxed fit throughout my legs while being able to tighten the waistband to my needs with the drawstring. These are a keeper.
4025994
I gave these pants a 5-star rating because the quality was better than expected. Durable material and very comfy. I did, however, have to return the pants because I read the other reviews and ordered a size larger, which turned out to be way too big. I usually wear a size 10 or 12 depending on the brand so I ordered a 3xl in fear that it might be too tight for my big thighs and hips. Boy was I wrong. I strongly suggest measuring your waist in order to determine what size to get. Also, these pants set a little below the belly button, so don't expect hip huggers.
27982
Was very pleased with these pants. Husband really likes them. Sizing is great too!
2307391
Great pants indeed! However , the large were too small and the XL are a bit big. I guess bigger id better than too tight. I usually wear a 10 in pants. Love the length and high waist! Really do love these <3
2847065
I love these pants.  I now have 3 pairs, and they are just perfect.  The petite length is perfect for me - I am 5' 6", but with short legs for that height. I love the small slits at the outside bottom edge of the moderate bootcut - it is just so cute.  I usually wear a size 20 pant, and I wanted to wear these to work, so I needed them NOT to be tight.  Size 1X is just right for me.  I am apple shaped, and these pants feel and look nice all day.  They are a little bit bigger than you might expect through the hips and thighs, so if you are looking for form-fitting pants, order a size smaller.  The elastic waist is heaven - stretchy enough and lightweight enough to be very comfortable.  I wish these came in some prints and stripes.  Then I would buy several more pairs, and I might not need any other pants.  The fabric is lightweight, but substantial enough not to feel like pajamas.  I can't say enough about how great these pants are for me.
4811302
I had purchased a different color of this style somewhere last year and I just loved the pants, so I had to really search to find this same style by the same company. I was lucky to find these. I love them for a few reasons -- very soft and comfy, a little shorter than the average yoga pant so I can actually wear them (I'm 5'3"), and they have a higher waistband that flattens the tummy a bit, which is just an added bonus! Great pants...would highly recommend them!
690795
I've finally found my perfect hiking pants!  These are beautifully designed and very well made, with nicely thought-out details.  They put the stretch in the right places; I knelt down to pick something up and they moved with me - nothing bound up or pulled. These are amazingly comfortable. The waist is the perfect height - right at my natural waist.  That's very hard to find these days and I'm totally sick of mid-rise hiking pants that only come up to the middle of my belly. Be aware of the sizing -  I'm 5-6", 135 lbs and usually do a 6-8 in pants.  These are listed as a medium, which is a UK size 12.  Size 12 just didn't seem right, but that's what the chart said so I ordered and they're a great fit.  I'm so happy - can you tell?  I'm also really glad that I ordered 2 pairs.

I took these out this backpacking this weekend and they were great.  All of those little details add up to one terrific pair of pants.  The soft knit lining on the waistband is very comfortable. Pockets are well-placed and deep enough to be useful. The zip pocket even has a small pleat at the top and bottom to give you an extra bit of room without being baggy.  Fabric is great -  I was tromping through mud as I was also testing out a new pair of boots, and everything just rolled right off. The leg vents are great!!!  They really added to the comfort level as the temperature warmed up a bit; that they functioned so well was a very pleasant surprise.
363299
I love these pants but I will be ordering another pair in a smaller size next time.
1435237
read the reviews for size, i wear a 12-14  aboit 34" waist and 44" hips and i git a 2x because  they don'the have a size between large and 2x, one size down would work too if you like more snug fit. these are my new favorite pants! I just wish they had more than 2 colors available in 2x! I will buy more colors if they become available.
530311
I love these pants -- immediately!  I just received them and just now tried them on.  I love them so much that I immediately sat at my laptop to order another pair and to write a review.  Originally I purchased these for warm weather hunting, but they look cool enough that I just might wear them to work tomorrow.  I wish Columbia had a green camo pattern as well...then I would buy two of those, too.

I purchased the size 10 Long, and I'm very pleased with the fit.  I'm 5' 8" with a 32 inch inseam...and I weigh 155.  The waist band hits at the perfect spot -- between the hips and the waist.  They are not mom jeans, and they are not hip-hugging muffin top makers.  All bodies are different I suppose, but I'm really happy with the cut.

The material doesn't feel cheap.  It's ripstop nylon, and I anticipate these pants surviving my hunting-hikes in the Utah, Colorado, and Wyoming mountains.  The hip and back pockets are breathable mesh on the inside, so there's not an extra layer of warmth in the pocket areas.  Clever -- one of the back pockets is velcro, the other zipper.  I just asked my husband's opinion -- he said the material feels nice and light, and does not feel cheap.  Although he said that these will be nice for warm weather hiking, he wouldn't want a pair for himself.  "I have enough gear."
2455887
I really like these pants. They do run a little large I would say. I sometimes go to an XL just for comfort and I am so glad I got the Large because they run bigger at the top. I would buy these pants again. Price is fantastic too!
3905631
So If you can get over a few gripes with these pants, you will absolutely love them!
First Off: I Ordered a 36x31 and when they arrived the fit was ALMOST perfect...(Keyword ALMOST); The biggest complaint i Have is that they are  snug on my Hamstrings...(BUT I am a power lifter so...) other than that they fit well at the waist and the butt area is perfectly fine as well as the length and calf area..
Second: To see if the 38X31 was a better fit, i bought a pair..They arrived and everything was perfect except for two things, The waist was a bit bigger than i expected but i don't mind that since I'd be wearing a Belt, the only Major down side is that the Butt Area is too big. its so Big that i Have to raise the pants to My Belly Button to not look like I'm Sagging my pants..(I only find that as a gripe since i'm not used to wearing my pants that high, usually around the waist or a bit higher)
I'm a 17 year old at about 5'11 but weigh at about 230 lbs, I typically use a 36 x 30 but its seems that the 36 x 31 seems to be the closest fit for me, I just have to stay away from the deadlifts more often. Other than that i have not had any other issues in terms of fit. But have run into a build quality issue where the button is already about to come off, its nothing major since i only payed $13.99 for them and the fact that sewing it will fiox it but i expected some better build quality. To Make a long review short i recommend going with your normal size first and then going to a bigger size if the other doesn't  fit