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Arc'teryx  Rho SV Zip-Neck Base Layer Top - Men's

$140.00
Members get an est. $14.00 in rewards

This warm, technical Arc'teryx base layer is built to keep you comfortable without creating bulk. The hollow-core fleece is breathable during high-output ascents and descents. And it has a zip neck.

Color: Black
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Features

  • Warm and comfortable
  • 210 g/m² hollow-core fleece has an exceptional warmth-to-weight ratio, and it stays soft to reduce chafing during high-output movement
  • Fitted, with articulated patterning for mobility and comfort
  • Laminated chest pocket
  • Zip neck and extended collar provide an option for extra ventilation or additional coverage, depending on what the conditions call for
  • PFAS (per- and polyfluoroalkyl substances) compliant

Imported.

View all Arc'teryx Men's Base Layer Tops

Technical Specs

Best Use

Snowsports

Shirt Type

Partial-zip

Fabric

Recycled Octa x Solotex Raschel anti-shed fleece, 210 g/m², 100% polyester

Underwear Weight

Heavyweight

Sleeve Length

Long Sleeve

Gender

Men's

Size Chart

Arc'teryx Clothing - Men's
XXSXSSMLXLXXLXXXLXS ShortS ShortM ShortL ShortXL ShortXXL ShortS TallM TallL TallXL TallXXL Tall28303233343638
Chest3335374043475154.53537404347513740434751
Sleeve Length3031.532.534353637383233343536373334353637
Waist272931343740.544.548.52931343740.544.531343740.544.530323435363840
Hip32.534.536.539.542.546.5505434.536.539.542.546.55036.539.542.546.55035.537.539.540.541.543.545.5
Inseam313131.53232.533332929.53030.5313134.53535.5363631.531.532323232.533

Sizing Notes

Measurements are stated in inches unless otherwise indicated.

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Reviews
11 reviews with an average rating of 3.8 out of 5 stars

86% 6 of 7 reviewers recommended

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LUCIANO MAZZANTI
Location:SENIGALLIA, AN , ITALY
Rated 1.0 out of 5 stars
3 weeks ago

RHO SV :flawed design, REAL HEAT LOSS

Sometimes I seriously wonder who is responsible for designing — or redesigning — your technical garments. Because Arc’teryx, once a benchmark for true technical performance, now seems to be drifting in a very different direction. For many years my daughter has given me Arc’teryx fleeces, precisely because I trusted the brand for real-world functionality, build quality, and thoughtful design. This year she gave me a Rho SV, size L, purchased in London. Unfortunately, it is one of the most disappointing garments I have ever worn. I have to ask plainly: is this decline in fit and performance intentional? The collar design on this fleece is baffling. It is low and wide on a garment meant for cold conditions. The neck is one of the most critical areas to protect from heat loss — and in this case, the design actively fails at that task. I compared the Rho SV with another Arc’teryx fleece I own and that performs correctly: the Delta Half Zip, same size L. The difference is striking. The Rho SV collar is approximately 3 cm lower and 5 cm wider. I have attached photos with measurements. Looking at them, it is hard to understand how this could be considered an improvement — or even acceptable for a winter technical layer. Over the years I have purchased dozens of Arc’teryx products, including jackets and fleeces. I have already stopped buying your jackets altogether. The decline in quality and functionality is obvious. I own two Cerium jackets of the same model: the older one is excellent, while the newer one has noticeably less insulation that shifts to the sides, creating cold spots. A garment that lets cold in has failed its primary purpose. Arc’teryx once stood for warmth, functionality, and freedom of movement. Sadly, these values now seem secondary. Reading other customer comments, it is clear that I am not alone in these concerns — which suggests this is not an isolated issue. I live in Italy and do not have access to an official Arc’teryx retailer in my area. I would like to replace this Rho SV with a model I already own and that works properly (Delta Half Zip). How can I proceed? Because when design starts serving marketing instead of the mountains, the cold is felt — and not just around the neck. I look forward to your response. Lucian

Response from arcteryx.com
Arc'teryx Guest Services
2 weeks ago

Hello Lucian, thank you for taking the time to share such detailed feedback. We’re truly sorry to hear how disappointing your experience has been with the Rho SV Zip Neck, especially given your long history with our products and the trust you’ve placed in Arc’teryx over the years. We understand how frustrating it must feel to compare this piece with past garments that performed exactly as you needed, and we appreciate the care you took in outlining the fit and collar concerns. We want to reassure you that our team is already in contact with you to help find the best path forward, including supporting your request to move toward a model that works better for you.

Knowsitall
Rated 5.0 out of 5 stars
1 month ago

Great for the reccomended uses!

I sent that this sweater if it's great . I love the way it keeps me warm, I can wear it for 10° runs, i can lounge in it and look well put together in temps 30-50. Great piece, short collar is cool too

Krakski
Location:Tahoe
Rated 3.0 out of 5 stars
2 months ago

Quality downgrade?

Hhhhhmmmmm, so you changed the fabric, shortened and widenend the collar, just doesnt appear to be the best-in-class item it used to be. Too bad. Usually I like to get a new color every couple years, I'll pass and keep wearing the originals.

Response from arcteryx.com
Customer Service
2 months ago

Hello Krakski, thanks for sharing your thoughts on the updated Rho SV Zip Neck. We’re sorry to hear the changes didn’t resonate with you, especially since the original version was clearly a favourite. Adjustments to fabric and fit, like the collar redesign, are made with performance and comfort in mind, but we understand that longtime customers notice the difference. Your feedback is important, and we’ve passed it along to our product team. We truly appreciate your loyalty and hope future iterations bring back what you loved.

Tom H
Rated 2.0 out of 5 stars
3 weeks ago

Not Warm/SV

Advertising that this is their warmest base layer and marketing it as SV is ridiculous considering last year their warmest base layer was the polartec fleece heavyweight which is at least twice as thick and insulating.

Response from arcteryx.com
Arc'teryx Guest Services
3 weeks ago

Hi Tom, thank you so much for sharing your review of the Rho SV Zip Neck! We’re sorry to hear it didn’t meet your expectations for warmth. The Rho SV is designed as our warmest technical base layer, using a lightweight, hollow-core fleece that balances warmth with breathability for high-output activities. We understand how important warmth is, and your feedback is invaluable. We’ve shared it with our design team to help improve future products. Thank you again for taking the time to leave a review!

alpexp
Rated 3.0 out of 5 stars
1 month ago

It doesn't meet the standard of the arcteryx

The fabric is windproof and warm. But the tailoring and neckline workmanship of this dress are not very good. When I raise my arms, my armpits are very restricted。The neckline is too big to adapt to atom sv

Response from arcteryx.com
Arc'teryx Guest Services
1 month ago

Hi there, thank you for sharing your experience with your Rho SV Zip Neck. We’re happy to hear that you found it warm. While the Rho SV Zip Neck is built to be breathable while providing warmth and comfort, it’s designed as a base layer and is not windproof. Still, we’re sorry to hear that the fit felt restrictive at the armpits when raising your arms, and that the neckline didn’t pair well with your Atom SV as expected. We understand how important comfort and compatibility are, and we appreciate you bringing this to our attention. Your feedback is incredibly valuable, and we’ve shared it with our design team to help improve future products. Thank you again for taking the time to leave a review.

Gunni
Rated 5.0 out of 5 stars
3 weeks ago

Its so good i had to buy more

Its so good i had to buy more, runs maybe a tad small, but i recomend staying true to you sul arcteryx size, th terry fleece on the inside is so great and gives a great warm feeling when wearing it.

Buddha
Location:Indiana
Rated 5.0 out of 5 stars
3 weeks ago

Keeping Comfortable

This IS the warmest RHO top by far, silky comfortable next to skin.. have considered the Aster colored one, but am more interested in the Aster RHO bottoms the model is wearing, where are those?

JON K
Rated 3.0 out of 5 stars
2 months ago

Be careful of sizing, comes up large

Usually have the Rho Heavy. SV is much thinner and also a lot larger than my usual L size. They have also replaced the metal zip pulls with material, doesn't seem as good or durable

Response from arcteryx.com
Arc'teryx Guest Services
2 months ago

Hi Jon, thank you for taking the time to share your feedback on the Rho SV Zip Neck. We're sorry to hear that the sizing and fabric might not have been what you were looking for, especially in comparison to the previous Rho piece you owned. In recent seasons, we’ve updated our men's fit. While medium remains unchanged, smaller sizes are now tighter and larger sizes are now looser. For future purchases, we would recommend referring to our Men's sizing chart and fit guide on the product page. Your note about the updated zipper pulls is very helpful, and we’ve shared it with our design team for consideration in future updates. Thank you again for taking the time to let us know.

TheAGuys
Rated 5.0 out of 5 stars
1 month ago

Fine piece

It’s a nice and quiet warm base layer, the fit is true to size. I like that the zipper goes far down the chest to regulate temperature.

JON K
Location:UK
Rated 5.0 out of 5 stars
3 months ago

Unbeatable.

My go to daily wear top Autumn to Spring, have 10, just about to order number 11. Only very minor gripe, more colour choice please.

1 - 10 of 11 Reviews

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