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  • 4 4 5.5 4ZM3.5 4C3.22386 4 3 3.77614 3 3.5C3 3.22386 3.22386 3 3.5 3C3.77614 3 4 3.22386 4 3.5C4 3.77614 3.77614 4 3.5 4ZM1.5 4C1.22386 4 1 3.77614 1 3.5C1 3.22386 1.22386 3 1.5 3C1.77614 3 2 3.22386 2 3.5C2 3.77614 1.77614 4 1.5 4ZM2.5 5C2.22386 5 2 4.77614 2 4.5C2 4.22386 2.22386 4 2.5 4C2.77614 4 3 4.22386 3 4.5C3 4.77614 2.77614 5 2.5 5ZM4.5 5C4.22386 5 4 4.77614 4 4.5C4 4.22386 4.22386 4 4.5 4C4.77614 4 5 4.22386 5 4.5C5 4.77614 4.77614 5 4.5 5ZM6.5 5C6.22386 5 6 4.77614 6 4.5C6 4.22386 6.22386 4 6.5 4C6.77614 4 7 4.22386 7 4.5C7 4.77614 6.77614 5 6.5 5ZM7.5 6C7.22386 6 7 5.77614 7 5.5C7 5.22386 7.22386 5 7.5 5C7.77614 5 8 5.22386 8 5.5C8 5.77614 7.77614 6 7.5 6ZM5.5 6C5.22386 6 5 5.77614 5 5.5C5 5.22386 5.22386 5 5.5 5C5.77614 5 6 5.22386 6 5.5C6 5.77614 5.77614 6 5.5 6ZM3.5 6C3.22386 6 3 5.77614 3 5.5C3 5.22386 3.22386 5 3.5 5C3.77614 5 4 5.22386 4 5.5C4 5.77614 3.77614 6 3.5 6ZM1.5 6C1.22386 6 1 5.77614 1 5.5C1 5.22386 1.22386 5 1.5 5C1.77614 5 2 5.22386 2 5.5C2 5.77614 1.77614 6 1.5 6Z"

    United States

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  • 4 4 5.5 4ZM3.5 4C3.22386 4 3 3.77614 3 3.5C3 3.22386 3.22386 3 3.5 3C3.77614 3 4 3.22386 4 3.5C4 3.77614 3.77614 4 3.5 4ZM1.5 4C1.22386 4 1 3.77614 1 3.5C1 3.22386 1.22386 3 1.5 3C1.77614 3 2 3.22386 2 3.5C2 3.77614 1.77614 4 1.5 4ZM2.5 5C2.22386 5 2 4.77614 2 4.5C2 4.22386 2.22386 4 2.5 4C2.77614 4 3 4.22386 3 4.5C3 4.77614 2.77614 5 2.5 5ZM4.5 5C4.22386 5 4 4.77614 4 4.5C4 4.22386 4.22386 4 4.5 4C4.77614 4 5 4.22386 5 4.5C5 4.77614 4.77614 5 4.5 5ZM6.5 5C6.22386 5 6 4.77614 6 4.5C6 4.22386 6.22386 4 6.5 4C6.77614 4 7 4.22386 7 4.5C7 4.77614 6.77614 5 6.5 5ZM7.5 6C7.22386 6 7 5.77614 7 5.5C7 5.22386 7.22386 5 7.5 5C7.77614 5 8 5.22386 8 5.5C8 5.77614 7.77614 6 7.5 6ZM5.5 6C5.22386 6 5 5.77614 5 5.5C5 5.22386 5.22386 5 5.5 5C5.77614 5 6 5.22386 6 5.5C6 5.77614 5.77614 6 5.5 6ZM3.5 6C3.22386 6 3 5.77614 3 5.5C3 5.22386 3.22386 5 3.5 5C3.77614 5 4 5.22386 4 5.5C4 5.77614 3.77614 6 3.5 6ZM1.5 6C1.22386 6 1 5.77614 1 5.5C1 5.22386 1.22386 5 1.5 5C1.77614 5 2 5.22386 2 5.5C2 5.77614 1.77614 6 1.5 6Z"

    United States

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Kyanite Baselayer Bottom Women's
€120.00

Kyanite Baselayer Bottom Women's

Rating Distribution

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36 reviews with 5 stars.
8 reviews with 4 stars.
6 reviews with 3 stars.
1 review with 2 stars.
6 reviews with 1 star.

Overall Rating

4.2
36 out of 43 (84%) reviewers recommend this product

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Rating Summary

warmth
comfort
purchase
fit
layering
satisfaction
wearing
softness
9 to 38 of 57 Reviews
9 – 38 of 57 Reviews
Response from Arc'teryx:
6 months ago
Customer Service
Hello there, thank you for sharing your experience with the Rho Heavyweight Bottom. We’re sorry to hear about the issues with pilling and the development of a hole after limited use. We see that you've already reached out to our After-Sales team, and a resolution has been offered. We appreciate your patience and hope to provide a satisfactory outcome. Your feedback has been shared with our product team to help improve future designs.
0 Comments
Milwaukee, WI
Age25 to 34
GenderFemale
5 out of 5 stars.

Best Baselayer

6 months ago
This is my go to baselayer for outdoor activities on the coldest of days. Comfy, warm, and fits well under other layers without a ton of bulk.
Q: Size Purchased:
A: Small
I use this product for:Climbing, Mountaineering, Ski/Snowboard

Yes, I recommend this product.

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Vancouver, BC
Age35 to 44
GenderFemale
Your Height:153cm - 160cm
5 out of 5 stars.

Super warm cozy bottoms!

6 months ago
These bottoms are super soft and comfortable, and are my go-to base layer for cold weather low output activities like easy hikes, mellow resort days, or just wearing around the city. I like the side pocket for my phone if i’m wearing them as my only layer, or my keys if they are under a shell.
Q: Size Purchased:
A: S
Q: Pros:
A: warm, comfortable, looks good
I use this product for:Commuting/Travel, Trekking, Casual Wear, Hiking, Ski/Snowboard

Yes, I recommend this product.

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Canada
Age45 to 54
GenderFemale
Your Height:176cm - 182cm
5 out of 5 stars.

Great base layer for skiing.

6 months ago
Love the leg side pocket for keeping the phone warm while touring.
Q: Size Purchased:
A: Large
Q: Pros:
A: warm and stretchy
I use this product for:Ski/Snowboard

Yes, I recommend this product.

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2 out of 5 stars.

Trop court

7 months ago
Le vêtement est vraiment trop court et le tissu ne correspond pas à la qualité habituelle des produits Arc'teryx. Je l'ai donc retourné.
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Response from Arc'teryx:
7 months ago
Customer Service
Bonjour, merci d’avoir partagé votre expérience avec le collant Kyanite. Nous sommes navrés qu’il n’ait pas répondu à vos attentes en termes de coupe et de tissu. Votre avis est très important pour nous, et nous le transmettrons à notre équipe de développement. Si vous souhaitez explorer d’autres options, notre équipe se fera un plaisir de vous aider à trouver un produit mieux adapté à vos besoins.
0 Comments
Age35 to 44
GenderFemale
Your Height:161cm - 167cm
1 out of 5 stars.

Poor quality

7 months ago
I don't know if it just got a defective product, but I bought these leggings and the matching top and within less than six months of very light use, the fabric has holes everywhere (both the top and these bottoms). Not holes at the seams.... no, just random holes in the fabric, and not even in high wear spots. I've never had a baselayer do this before. It was comfortable while it lasted, but overall extremely poor quality.
Q: Size Purchased:
A: M
Q: Pros:
A: Comfy
Q: Cons:
A: Disintegrates with minimal use

No, I do not recommend this product.

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Response from Arc'teryx:
7 months ago
Arc'teryx Guest Services
Hi Andrea, thank you for reaching out and sharing your experience with the Kyanite Baselayer Bottom and matching top. We're glad to hear you found these items comfortable but are sorry that neither piece held up as expected. We understand how disappointing this must be and would be happy to assist you further. Please feel free to submit a Product Service Request form and our After-Sales team can take a closer look at the issue: https://arcteryx.com/ca/en/help/product-service/service-request
1 Comment
7 months ago
Funny story I have bought two pairs of these leggings and I have had holes show up in random places too from extremely light wear. At first I thought it was a me problem so I bought another pair and it didn’t even last 3 months and again holes my friend had the same thing happen. So I submitted a product service request and was told it wasn’t going to be covered under warranty and that essentially nothing could be done. I am so disappointed, clearly I am not alone…. Sad as I absolutely love these leggings.
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5 out of 5 stars.

Amazing!!

7 months ago
These pants are soooooo warm and comfy!! I love the side pocket.
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Age45 to 54
GenderFemale
Your Height:176cm - 182cm
5 out of 5 stars.

Cozy but buy Men’s sizing if want longer inseam

9 months ago
Love these. Cozy. I’ve got two pairs. I’ve switched to Men’s tho, for longer inseam. Wear them to stay warm around the house and for winter SAR callouts.
Q: Size Purchased:
A: M
Q: Pros:
A: Cozy, tough.
Q: Cons:
A: Prefer longer inseam.

Yes, I recommend this product.

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Whistler, BC
Age35 to 44
GenderFemale
5 out of 5 stars.

Super warm and cozy

a year ago
Wore the RHO Heavyweight base layers on the super cold -20 days in Whistler and I was able to stay out on the hill all day no problem. This is my go to when the temperatures dip or when I know I’m going to be outside standing around for extended periods.
Q: Size Purchased:
A: Medium
Q: Activity
A: Resort snowboarding
Q: Your Height:
A: 5’5

Yes, I recommend this product.

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Age55 to 64
GenderFemale
Body TypeCurvy
5 out of 5 stars.

Warm, cozy & comfortable

a year ago
As usual with Arcteryx, this is superb gear. These tights are thicker & warmer than any I've found for about 20 years. The Rho move comfortably, and I think the outer layer will keep a lot of wind out. I'm 5 ft 6" and 127 pounds, and the Medium fits very well.
Q: Size Purchased:
A: medium
Q: Activity
A: trekking at high elevations
Q: Your Height:
A: 5ft 6 in
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3 out of 5 stars.

waistband design has changed

a year ago
I bought these rho pants as I own quite a few and like them. Unfortunately, the waistband at the top has tripled in size so it fits like yoga pants with a tight, very wide, elasticized section that sits high on my tors. Cost me $50 to have the band reduced by 2/3s so it sits more comfortably on my waist.
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Calgary, AB
Age55 to 64
GenderFemale
Body TypeSlim
5 out of 5 stars.

Stylish, comfy and warm!

a year ago
I know these are a "base layer" but I wear them as winter pants all the time. They look stylish and flattering, at least so far (a couple of washes). The pocket adds to the look and makes them dressier than your typical leggings. The broad waistband is comfy and the stretch is the fabric is very forgiving but doesn't get too loose at the knees
Q: Size Purchased:
A: medium
Q: Pros:
A: warm, comfortable and stylish
Q: Cons:
A: none
Q: Activity
A: cross country skiing, daily living
Q: Your Height:
A: 5'9"

Yes, I recommend this product.

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Age55 to 64
GenderFemale
5 out of 5 stars.

Warm and confy

a year ago
I bought it for my ski trip to Jackson Hole. Extremely comfortable very warm. I highly recommend

Yes, I recommend this product.

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BC
Age35 to 44
GenderFemale
Body TypeAthletic
3 out of 5 stars.

Too short

a year ago
Please make these longer. I'm 5'8 and XS, they sit above my hiking boot line which makes it uncomfortable. so far the most solid winter tights...if they were just a bit longer.
Q: Size Purchased:
A: Xs
Q: Your Height:
A: 58

Yes, I recommend this product.

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Collingwood
Age55 to 64
GenderFemale
Body TypeAthletic
3 out of 5 stars.

Change of product

a year ago
I buy these pants every year. They are a staple in my closet. This year they changed not only the design but the composition of the fabric blends. Used to be 88% Polyester and 12% Elastane. Now it's 53% Polyester and 38% Nylon and 9% Elastane. Not the same feel or wear. Quality has gone down in my opinion.
Q: Size Purchased:
A: M
Q: Pros:
A: Versatile
Q: Cons:
A: Changed formula and design
Q: Activity
A: Everyday use
Q: Your Height:
A: 5'7"

No, I do not recommend this product.

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New Hampshire
Age25 to 34
GenderFemale
Body TypeCurvy
4 out of 5 stars.

Better fit than 2022-2023

a year ago
I’m a longtime fan of the rho. I was delighted to see Arcteryx made adjustments to the sizing to return to the fit during the 2021-2022 ski season. The 2022-2023 season one was baggy in all the wrong places and would not stay up. This one hugs nicely and has enough elasticity to return to a smaller size after wearing it and stretching it out. This still fits on the looser end but it stays in place better. The waistband stays in place. I would love to see a curved inseam on these instead of the T inseam to accommodate curves better. I’m 5’10 and always wear a tall but this looks good. I will still have to fold these up out of the way of my ski boots. I would love to see a heavyweight bootcut version about 4 inches shorter than the current boot cut model on the regular weight this to better accommodate ski boots and ski socks.
Q: Size Purchased:
A: L
Q: Pros:
A: Warm
Q: Cons:
A: Baggy
Q: Activity
A: Skiing
Q: Your Height:
A: 5’10”

Yes, I recommend this product.

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GenderFemale
Body TypeAthletic
5 out of 5 stars.

Best pants!

a year ago
I can't say enough about these pants - they are amazing in every way. They hold up well under frequent washing and I've not experienced them stretching out despite heavy rotation of a few pairs. What I like the most is the fabric - It's almost impossible to describe. They are the only durable pants I've owned that are super soft (like a redefining soft type of soft) and don't itch or scratch, including the seams. Super high quality and engineered masterfully, right down to the side pocket you did not know you needed to be small until you did. Keeps the chill off both indoors and outdoors and creates very flattering lines.

Yes, I recommend this product.

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0 Comments
5 out of 5 stars.

Cozy and Flattering

a year ago
Wonderful tights. Comfy, soft, flattering and warm. Will definitely buy extra pairs!
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Age25 to 34
GenderX
Body TypeAthletic
5 out of 5 stars.

Can’t take ‘em off

a year ago
Bought for cold canada ski trip it kept me really warm and good a wicking sweat! I’m buying a few more and never taking them off during the winter haha
Q: Size Purchased:
A: S
Q: Pros:
A: Everything
Q: Cons:
A: None
Q: Activity
A: Ski
Q: Your Height:
A: 5’5”

Yes, I recommend this product.

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Mountain Home, Idaho, USA
Age25 to 34
GenderFemale
Body TypeSlim
5 out of 5 stars.

Great Quality, the best so far.

a year ago
I've owned many tights from various brand and so far the quality is the best i've felt/seen. The design is sleek and quality is top notch. I love this!
Q: Size Purchased:
A: XXS
Q: Pros:
A: The material
Q: Activity
A: Daily wear, rock climbing
Q: Your Height:
A: 140lbs

Yes, I recommend this product.

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Girdwood, Alaska
Age55 to 64
GenderFemale
Body TypeAthletic
5 out of 5 stars.

Better than pants

a year ago
I bought these to wear running under my snow skirt and just around the house in the winter. I love the feel of them and the warmth. Great for snow shoveling and running errands.
Q: Size Purchased:
A: large
Q: Pros:
A: Soft and comfortable, pretty color
Q: Cons:
A: Want more to wear everyday
Q: Activity
A: Alaska Living
Q: Your Height:
A: 5'6"

Yes, I recommend this product.

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Age35 to 44
GenderFemale
Body TypeAthletic
5 out of 5 stars.

Super warm but looses nice finish after washing it

a year ago
Super warm and comfortable. Fits perfectly. Just doesn’t look that nice after first wash (inside out, gentle).
Q: Size Purchased:
A: XS
Q: Your Height:
A: 172
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0 Comments
Age55 to 64
GenderFemale
Body TypeAthletic
5 out of 5 stars.

Toasty winter tights!

a year ago
Bought yesterday and am very pleased with the purchase. Very comfortable and toasty warm. I may purchase another pair. Found to be true to size.
Q: Size Purchased:
A: medium
Q: Pros:
A: Comfortable
Q: Activity
A: Hiking, skating, walking, yoga etc.
Q: Your Height:
A: 5"10', 160 lbs.

Yes, I recommend this product.

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Osoyoos, B.C. Canada
Age55 to 64
GenderFemale
Body TypeAthletic
5 out of 5 stars.

The perfect layer to keep you warm

a year ago
These bottoms are very comfortable and warm without overheating. Plus, wind stays out. True to size.
Q: Size Purchased:
A: Medium
Q: Pros:
A: Warmth without overheating
Q: Cons:
A: None
Q: Activity
A: Walking, skiing, lounging
Q: Your Height:
A: 5'3"

Yes, I recommend this product.

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Montréal, Qc
Age25 to 34
GenderFemale
Body TypeAthletic
5 out of 5 stars.

Warm and soft

a year ago
Bought myself the Rho Heavyweight cause I’m always cold! This base layer delivers, super warm and very soft on the inside with the Polartec
Q: Pros:
A: Warm and soft
Q: Cons:
A: Had to size down
Q: Activity
A: Skiing

Yes, I recommend this product.

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Calgary, AB
Age35 to 44
GenderFemale
Body TypeAthletic
5 out of 5 stars.

Amazing Fit!!

a year ago
These are the most outstanding base-layer long underwear I've ever owned. Incredibly warm. Amazing fit with no bunching or limit of movement.
Q: Size Purchased:
A: M
Q: Activity
A: Snowboarding
Q: Your Height:
A: 130 lbs

Yes, I recommend this product.

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Age35 to 44
GenderMale
Body TypeAthletic
5 out of 5 stars.

Sooo cozy & chic!

a year ago
Super cozy. Great base layer or as leggings for everyday use.
Q: Size Purchased:
A: M
Q: Cons:
A: Pick up lint easily.
Q: Your Height:
A: 5’6

Yes, I recommend this product.

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0 Comments
4 out of 5 stars.

Great!

a year ago
La taille est un peu plus grande et haute que le modèle normal. Super confortable.
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Fernie BC
Age35 to 44
GenderFemale
Body TypeAthletic
5 out of 5 stars.

Perfect for cooler days.

a year ago
I jumped online to purchase another pair of these bottoms today because I ended up wearing the ones that I bought last year so frequently. They’re very soft against my skin, they stay in place, and give a little bit of extra warmth for riding the chairlift or at work heliskiing. They look great too. I’m not sure what I would ever use the pocket for, but it does add a nice look to the legging, which is useful for me at work if I don’t have time to change between skiing and aprés but don’t want to wear my ski pants.
Q: Size Purchased:
A: M
Q: Pros:
A: Warm, soft, stay put
Q: Cons:
A: I don’t own another pair yet
Q: Activity
A: Skiing
Q: Your Height:
A: 5’9”

Yes, I recommend this product.

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9 – 38 of 57 Reviews
Kyanite Baselayer Bottom
rating 4.1754 out of 557 Reviews

Warm, versatile Polartec® Power Stretch® Pro base layer for cold conditions.

The Kyanite Baselayer Bottom was previously the Rho Heavyweight Bottom.


€120.00

Colour:Tatsu
Size:


Free shipping & Free returns


Kyanite Baselayer Bottom Women's

The Kyanite Baselayer is made for cold days and mixed output. On the move, the Polartec® Power Stretch® Pro stretches for outstanding freedom of movement. During rest phases – or when it gets really cold – the fleece’s soft brushed interior traps heat to keep you warm. The fleece’s durable nylon outer has a smooth face for comfort under layers, and a zippered thigh pocket secures small essentials.

What's been updated: Updated with a new fabric made with recycled content.

Polartec®

Synthetic fleece textiles with stretch, warmth and air permeable properties. Offers durability.

Multi-use

Versatile high performance designs for diverse activities and conditions.