All-new Vertex Speed | Free shipping & returns

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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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  • United Kingdom

  • 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

New Footwear

Run the climb in the new Vertex Speed, with a hybrid midsole for grip and speed into the ridgeline.

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Rho LT Zip Neck Men's
$140.00

Rho LT Zip Neck Men's

Rating Distribution

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19 reviews with 5 stars.
4 reviews with 4 stars.
3 reviews with 3 stars.
2 reviews with 2 stars.
3 reviews with 1 star.

Overall Rating

4.1
20 out of 23 (87%) reviewers recommend this product

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Rating Summary

layering
fit
warmth
comfort
wearing
purchase
satisfaction
large
9 to 31 of 31 Reviews
9 – 31 of 31 Reviews
Age25 to 34
GenderMale
Body TypeAthletic
3 out of 5 stars.

Nice fit and versatility but poor quality

a year ago
Great piece for all activities. Fits as base layer or as a middle layer. However I’m quite disappointed in the quality of the stitching around the bottom edge. It broke in 3 places on second use. I then had it fixed at a tailor and it broke once again in 2 new places. Generally Arc’teryx products are well made, but this is quite disappointing. Especially considering the premium price. Seems like they forgot to test the type of stitching here. It should at least be able to stretch just a bit when it’s an item for physical activity.
Q: Size Purchased:
A: M
Q: Pros:
A: Versatile and good looking
Q: Cons:
A: Poor quality
Q: Activity
A: Weightlifting, running, climbing
Q: Your Height:
A: 181 cm

Originally posted on Rho LT Zip Neck, 2021-2023

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The Netherlands
Age35 to 44
GenderMale
Body TypeLean
4 out of 5 stars.

Soft baselayer great for easy winter run

a year ago
Great baselayer in a nice soft fabric. I use it for my runs when it’s below and around freezing point, combinend with a light windshell. It works great to keep me warm. To fit is a nice trim fit, but I exepected a next to skin fit. I’m 1,83 meter and 70kg and wear a size small.
Q: Size Purchased:
A: Small
Q: Pros:
A: Soft and warm fabric
Q: Cons:
A: Not a next to skin fit
Q: Activity
A: Running
Q: Your Height:
A: 1,83 meter

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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Banja Luka, Bosnia
Age35 to 44
GenderMale
Body TypeAthletic
5 out of 5 stars.

This is not a base layer but rather a mid layer

a year ago
This item is sold as a base layer which is rather confusing to me. Due to its thickness and weight, i wear this as a mid layer, over actual base Rho base layer and it works perfectly. Due to lots of elastine, I didn’t have to size-up.
Q: Size Purchased:
A: XL
Q: Pros:
A: Great as a mid layer
Q: Cons:
A: None
Q: Activity
A: Skiing, hiking, mountaineering
Q: Your Height:
A: 195

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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5 out of 5 stars.

Very warm

a year ago
Very good quality. Smooth skinsurface. Warmth on high level.

Originally posted on Rho LT Zip Neck, 2021-2023

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United Kingdom
Age45 to 54
GenderMale
Body TypeAthletic
1 out of 5 stars.

When Small Is No Longer Small

a year ago
I have previously purchased 2x Rho LT Zip Neck (2020 / 21 era design in Small) and figured i'd add one more to the collection - the Black Sapphire colour is truly gorgeous. Unfortunately this design appears to have come at the cost of 'consistent sizing'. Although the enclosed sized chart still proclaims the same dimensions for the Small as in 2020 / 21(and i too have remained the same dimensions) - this new Rho LT in Small is easily a whole size bigger at least. Sadly it isn't even remotely figure hugging / fitted - as a good base layer should be - it's more like a baggy fleece. So disappointing - and now makes me rather distrustful of the size chart that accompanies other products i might have had my on!
Q: Size Purchased:
A: Small
Q: Pros:
A: Love the product
Q: Cons:
A: Hate the new sizing
Q: Activity
A: Ski / winter base layer
Q: Your Height:
A: 5ft 9in

No, I do not recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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Response from Arc'teryx:
a year ago
Seymour
Hello there. We're genuinely sorry to hear about the sizing issue with your recent Rho LT Zip Neck purchase. We have updated our men's sizing since 2020/2021 which is in line with our current sizing chart. Items from different years can have slightly different sizing as our sizing is always evolving to make the best gear possible for everyone of all body types. We apologize for any inconvenience this may have caused and we will be sure to pass your comments along to our design team.
0 Comments
5 out of 5 stars.

Magnificent!

a year ago
A second skin. Warm, elastic, resistant, almost only virtues I haven't been able to find a flaw in it for ten years.

Originally posted on Rho LT Zip Neck, 2021-2023

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1 Comment
a year ago
Hello, how lightweight is this? Looking for something lightweight and not too warm for day to day wear and layering
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Age25 to 34
Body TypeAthletic
5 out of 5 stars.

Great odor resistant base layer

a year ago
Nice base layer with a tight athletic fit. Very odor resistant so far.
Q: Size Purchased:
A: L
Q: Pros:
A: Nice fabric, odor resistant
Q: Activity
A: High output activities
Q: Your Height:
A: 190

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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Lodz, Poland
Age45 to 54
GenderMale
Body TypeAthletic
5 out of 5 stars.

My resting choice

a year ago
I use this layer to rest after a hard day in the mountains when I return to the shelter for the night. Very soft to the skin.
Q: Activity
A: Trekking
Q: Your Height:
A: 180 cm

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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Staffordshire
Age35 to 44
GenderMale
Body TypeSolid
4 out of 5 stars.

Great as a base layer or stand alone top

a year ago
Very versatile can be work and a base layer or top depending on the weather. Fits great and has washes really well.
Q: Activity
A: Hiking and photography
Q: Your Height:
A: 6ft1

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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Italy
Age55 to 64
GenderMale
Body TypeAthletic
3 out of 5 stars.

A strange size indeed!

2 years ago
I bought the Rho LT in M size and I found it in line with my expectations aside that probably a S size fit me at its best. I’m 184cm and 78kgs, normally dressing a L (50EU) but this M is too large for me.
Q: Pros:
A: Nice appeal
Q: Cons:
A: Too large
Q: Activity
A: Ski touring

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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London, Ontario
Age25 to 34
GenderMale
Body TypeSolid
5 out of 5 stars.

Nice base layer

2 years ago
Really nice base layer. Great for snowboarding. Fit a little big
Q: Pros:
A: Remove all the sweat and keep warm
Q: Cons:
A: Fits bigger
Q: Activity
A: Snowboarding

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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

Favorite

2 years ago
Perfect base. Running, lifting, skiing, climbing, work, lounging exc.
Q: Activity
A: Anything and everything

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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

Soft and stretchy

2 years ago
This top is amazing, the fabric is incredibly soft and stretch. Its warm for its weight and still very breathable. I do like the pocket. I can put my iPhone in there during the winter and with a running vest on it stays warm and doesn't bounce around.Sizing is consistent with other Arcteryx pieces. I initially bought a large after having read several reviews saying they fit tight. It fit but was quite baggy, would have been fine for just a casual shirt. Luckily Arcteryx has a great return policy. I got the medium and the fit is way better. Its not to tight that it couldn't be worn as a casual top, but still snug enough to wear as a base layer.
Q: Pros:
A: Soft and Stretchy
Q: Cons:
A: None
Q: Activity
A: Climbing, running

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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Austria
Age18 to 24
GenderMale
Body TypeAthletic
5 out of 5 stars.

Just perfect!

2 years ago
I recently purchased the Arc'teryx Rho LT ZIP Neck and have been thoroughly impressed with its performance. As a base layer shirt, it is incredibly comfortable and warm, and it feels like nothing I've ever tried before. It has quickly become my go-to base layer for all my winter activities on the mountain. One of the things that really sets this shirt apart is its ability to resist odor. Even after wearing it for seven straight days, it still doesn't smell. This is a huge advantage, as I've found that many other base layers start to smell after just a few days of use. Overall, I highly recommend the Arc'teryx Rho LT ZIP Neck. It is a top-quality base layer shirt that is comfortable, warm, and resists odor like nothing I've ever tried before. If you're in the market for a new base layer, this is definitely worth checking out.
Q: Pros:
A: Fit, warm, odorless
Q: Activity
A: Skiing, backcountry

Yes, I recommend this product.

Originally posted on Rho LT Zip Neck, 2021-2023

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3 out of 5 stars.

It’s ok

2 years ago
I usually love everything arcteryx makes this one item doesn’t live up to the standard of all the other items I’ve gotten from them. It’s not bad but it’s not what I expected. Some of the stitching is a bit loose and wonky.

Originally posted on Rho LT Zip Neck, 2021-2023

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9 – 31 of 31 Reviews
Rho LT Zip Neck
rating 4.0968 out of 531 Reviews

Performance base layer for lower output activities in cool to cold temperatures.


$140.00

Colour:Tatsu


Rho LT Zip Neck Men's

Comfort starts with your base layer. Made for performance during lower output activities on cool days, the Rho LT zip-neck adds warmth, moves moisture, and is soft next to the skin. Its Torrent™ fabric is brushed for thermal performance and comfort, and a Polygiene® treatment provides odour control. The trim fit maximizes fabric performance and facilitates layering, a deep front zip makes it easy to pull on and off, the chest pocket secures your smartphone, and the tall collar adds warmth.

Rho

Thermally efficient base layer with excellent moisture management properties. Has stretch comfort.

Lightweight

High performance, minimalist design that is durable for its weight.

Breathable material

Allows moisture vapour to escape, helping regulate temperature and elevating comfort inside garment.

Multi-use

Versatile high performance designs for diverse activities and conditions.