Arc'teryx Theta SV Bib - Women's

Full weather protection for pleasant ski trips.

Whether you ski or snowboard over backcountry or corduroy, the Arc'teryx Women's Theta SV Bib has the full weather protection you crave. Its nylon face has an X Gore-Tex pro membrane that's waterproof and windproof so you stay cozy no matter what blizzardy weather you're facing and that's breathable so your legs won't get sweaty. Plus, Arc'teryx added X Gore-Tex reinforcements at the knees, seat, and lower legs so you're doubly protected in critical areas. The Theta SV has an athletic fit and e3D patterning that follows the contours of your body, lets you move comfortably, and lets you layer easily underneath the bib.

Two full-length side zips run down the Theta to help you put your boots on and to provide venting options. The side zips and snaps up top also provide a drop-seat option so bathroom breaks are faster than ever.  Also keeping snow out are the comfy Cordura powder cuffs that have boot clips for your convenience. And a Keprotec patch covers your instep to protect the bib from boots and other abrasive features so you'll have the Theta SV for multiple seasons.   

  • X Gore-Tex Pro membrane and reinforcements
  • 80D nylon plain weave face fabric
  • Athletic fit with e3D patterning
  • High-waist design
  • Full-length, two-way zippers, drop-seat
  • Adjustable suspenders
  • Cordura powder cuffs with boot clips
  • Keprotec instep patch
  • Reviews
  • Q & A


  • Fit: True to size
  • Size Bought: Small

These bibs are great for touring, light weight and comfortable, however the pockets on the front have proven to be useless with the exception of a stash place for chapstick. Chapstick is definately a necessity for my girlfriend, but after multiple tours this past winter I observed her frustration with the lack of pockets for easy access to other essentials

Awesome pants and good fit!

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size
  • Size Bought: S

I wore these for the first time on an April weekend at Snowbird after a few inches of powder. It wasn't particularly warm out (high 30s), but the pants kept me very warm and dry. I like a less tight fit, so I am a fan of the room you get in these (but I get why some reviews have said that the pants run large). The pockets are certainly not large, but I wouldn't want large pockets there, they fit chapstick and an ID and credit card (which is useful). The material is really great though, light but breathable, I'm excited to use this bib more.

Great fit and quality

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: Small

I've used these pants for resort and backcountry riding and they have performed well in both conditions. The fit is trim, allows me to wear a base layer but not overly baggy. After years in a non-bib pant, I'm disappointed I didn't invest in these sooner as I no longer have to worry about getting snow down my back with these bibs. The only down side is the same comment the other reviewer mentioned: the small pockets. They are only good for a chapstick but then they are high enough where it's difficult to unzip the pocket with a layer on. I would expect backcountry ski pants to have at least one pocket big enough for a beacon.

Amazing bibs

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: Small

I've worn these bibs for 3 seasons of winter touring (splitboarding), and they have performed extremely well. I've worn them at the resort, too, and they have proven to be durable and comfortable. My only gripe is that they don't have thigh pockets - the only two pockets on the bib are inconvenient to access as they get buried under mid and outer layers. I found the fit to be trim (rather than roomy), but not tight.

Unanswered Question

Would these bibs be good for ice climbing too?

great fabric,but runs on the bigger sid

  • Familiarity: I returned this product before using it
  • Fit: Runs large

I am an XS, 5'7, 105. these bibs ran on a larger XS. I was a little disappointed on the fit. from thew photo it looking like it has more of a womanly fit. GOR-TEX is a great water proof fabric, unfortunately the fit did not work out

Does it have fleece lining inside

Does it have fleece lining inside

Best Answer

No, the lining for this item is made up of a nylon plain weave.

I am looking for a trim fit ski pant in...

I am looking for a trim fit ski pant in black or navy. I am petite, 5"4" and 105#. I have yet to find a ski pant that feels and looks good on me :(. (I am 54, and looking for something not baggy). Will this model in XS work for me?

The Theta Sv Bib is part of Arc'Teryx's athletic fit line and is a good slim option for most. Other athletic fit options to consider are the Arc'Teryx Stingray and Morra pants. The Gamma AR pant is a trim fit (slimmer even than the athletic fit) and could be another option for you, but as a climbing inspired softshell it wouldn't be an ideal choice for all skiing conditions.

Try the Black Diamond bib. Very tiny in the legs.

Best Answer

I do not own the Theta SV, but I do love my Patagonia Super Alpine bibs. They have a nice, slim, womanly cut and the bib height is perfect! I love the side zips and there is a thick, no rub layer in the boot area to prevent wear.

I do not own the Theta SV, but I do love my Patagonia Super Alpine bibs. They have a nice, slim, womanly cut and the bib height is perfect! I love the side zips and there is a thick, no rub layer in the boot area to prevent wear.

Hello, I'm somewhere between s and m, waist...

Hello, I'm somewhere between s and m, waist one cm smaller than s, hips one cm bigger than s. Shall I order s or m? Some users giving their commets have mentioned a bit too much space. Could you help please? Thanks Kate

Best Answer

Hi Kate, I would go with the Medium. Arc'teryx fit pretty true to size so it may be slightly loose, but not baggy in any way. If it comes down to it you can adjust the waist or pick up a lightweight belt to make them more secure.

Hi there, I just came back from the arcteryx store here in vancouver, bc where I was trying on the theta bib and tough luck on the sizing. With arcteryx products, small always fits perfectly but with these pants I found S to be a but too baggy around my waist and bum. I tried on an XS and while waist was a nice flattering fit the hips were too tight in XS. It also depends what you typically wear under your ski pants. If a pair of light-medium weight long johns then I'd say a Small will be all right.

Hey Alenka, do you have any thoughts on the quality of the material? I know the Theta material is supposed to be inferior to Alpha and Beta, obvi. But does it still feel like a good, thick, tear-proof GoreTex that will stand up to lots of.... love? Anybody??

Snug or Huge

    The quality is amazing. These pants are killer for keeping you dry, ventilating BIG TIME (excellent for touring!) esp. since the bib does not extend too high on the chest. The gaiters are perfect.

    The highlight: the full side leg zips extend to the wait/chest (secured by 2 snap closures at the top) and allow for a quick pee in the trees. Amazing. This is the best! So so great. I have never enjoyed going to the ladies room more since it's actually easy in a bib.

    Complaints: the pockets on the chest are smaller than they used to be (around 5 years ago).

    The size small looks super cute (perfect for skiing in-resort. my bum looks cute and they are slim-profile/look reasonable) BUT are kind of tight in the hips for more active pursuits (like touring or ice climbing). I can only wear one heavyweight icebreaker wool layer long underwear underneath.

    I tried the M and they were billowy and huge and ridiculous. My bum looked awful (but allow for ample movement!).

    Too bad there isn't a size in between.

    I am looking for something more comfortable for my very cold and more intense trips (roomy and attractive). Might try Mammut...

    too long

    • Familiarity: I returned this product before using it

    I have an older model of these pants (from 5 years ago) and I love them but because they're wearing out I need to replace them. I've tried this year's and last year's models of Arcteryx Theta SV bib and they are TOO LONG to the point that the legs bunch up when worn over ski boots and it just looks awkward and the extra fabric gets in the way. Very disappointed because they otherwise fit true to the size and have a flattering fit/pattern.

    Well Constructed, Gets the Job Done

    • Familiarity: I've put it through the wringer

    Snowboarding in Colorado (and not being a pro) I fall a lot and was used to being wet and having snow get under my pants. These awesome pants have solved that for me. The best part is that they are build so solid that despite my major abuse they look good as new. Everything was thought of and the fit and breath-ability are superb. Wear some capeline underneath and you will be good to go for a day on the slopes. I am a GORE MOUNTAIN TECH member and test gear for Gore, but because of that I knew exactly what to look for. You won't be disappointed if you give these a try!