How to Choose Base Layers
Arc'teryx Rho Heavyweight Zip-Neck Base Layer Top - Men's
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The men's Rho Heavyweight Zip-Neck base layer top from Arc'teryx is highly stretchy and pairs a durable, smooth face with a soft, brushed interior for warmth and wicking on cold, on-the-move days.
Shop similar products- Polartec® Power Stretch® Pro fabric with excellent stretch and articulated patterning allows for unrestricted freedom of movement
- Durable nylon outer has a smooth face for comfortable layering; interior brushed fleece traps in heat, wicks moisture and feels soft next to the skin
- Contains materials that meet the bluesign® criteria
- Tall collar extends warmth; deep front zipper lets you dump heat with rapid ventilation and allows easier on/off
- Zippered chest pocket
- Trim fit keeps warmth close to the body and makes it easy to wear under mid and outer layers
- Previously the Rho AR Zip-Neck base layer top
Imported.
View all Arc'teryx Men's Base Layer Tops| Best Use | Multisport |
|---|---|
| Shirt Type | Partial-zip |
| Fabric | Polartec Power Stretch Pro 53% polyester/38% nylon/9% elastane (bluesign®-approved) |
| Moisture Wicking | Yes |
| Underwear Weight | Heavyweight |
| Sleeve Length | Long Sleeve |
| Gender | Men's |
| Sustainability | Contains materials that meet the bluesign® criteria |
Arc'teryx Clothing - Men's
| XXS | XS | S | M | L | XL | XXL | XXXL | XS Short | S Short | M Short | L Short | XL Short | XXL Short | S Tall | M Tall | L Tall | XL Tall | XXL Tall | 28 | 30 | 32 | 33 | 34 | 36 | 38 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chest | 33 | 35 | 37 | 40 | 43 | 47 | 51 | 54.5 | 35 | 37 | 40 | 43 | 47 | 51 | 37 | 40 | 43 | 47 | 51 | |||||||
| Sleeve Length | 30 | 31.5 | 32.5 | 34 | 35 | 36 | 37 | 38 | 32 | 33 | 34 | 35 | 36 | 37 | 33 | 34 | 35 | 36 | 37 | |||||||
| Waist | 27 | 29 | 31 | 34 | 37 | 40.5 | 44.5 | 48.5 | 29 | 31 | 34 | 37 | 40.5 | 44.5 | 31 | 34 | 37 | 40.5 | 44.5 | 30 | 32 | 34 | 35 | 36 | 38 | 40 |
| Hip | 32.5 | 34.5 | 36.5 | 39.5 | 42.5 | 46.5 | 50 | 54 | 34.5 | 36.5 | 39.5 | 42.5 | 46.5 | 50 | 36.5 | 39.5 | 42.5 | 46.5 | 50 | 35.5 | 37.5 | 39.5 | 40.5 | 41.5 | 43.5 | 45.5 |
| Inseam | 31 | 31 | 31.5 | 32 | 32.5 | 33 | 33 | 29 | 29.5 | 30 | 30.5 | 31 | 31 | 34.5 | 35 | 35.5 | 36 | 36 | 31.5 | 31.5 | 32 | 32 | 32 | 32.5 | 33 |
Sizing Notes
Measurements are stated in inches unless otherwise indicated.
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Most Helpful Favorable Review
Amazing quality but I had to exchange it first
ant1 year ago
I'm on the muscular side, at 5'9 and 190 pounds, but I typically fit in between a traditional "medium" or "large" size. Most of my large-sized clothes are a bit roomy but still hold well to my body, and medium typically gives a more snug and slim, yet still comfortable, fit.
I thought I'd get this quarter-zip in medium since it was a base layer and would probably look better not baggy. I also looked at the provided measurements and they just about line up perfectly with my proportions, so I wasn't expecting any issues from this product.
However, what I got in the mail was ridiculously small. I have a few "small" -sized t-shirts laying around that honestly are easier to get into than this. It was more or less skintight, and not breathable at all.
Although I get that "medium/large" is kind of arbitrary, the provided measurements are very deceptive, as they indicate that it should be slightly roomy for me if anything. I may have gotten a mismarked/defective one, but I recommend sizing up.
Arc'teryx is a great brand, and the fabric for this top has an amazing feel and has really good warmth to it. I exchanged for a large that fit me way better. If you're in the same boat as me, where you can alternate between med/large, I recommend taking the upper limit, and perhaps even consider sizing all the way up to an XL if u want it relaxed more.
ant
Berkeley, CA
6 people found this review helpful
Most Helpful Critical Review
Amazing quality but I had to exchange it first
ant1 year ago
I'm on the muscular side, at 5'9 and 190 pounds, but I typically fit in between a traditional "medium" or "large" size. Most of my large-sized clothes are a bit roomy but still hold well to my body, and medium typically gives a more snug and slim, yet still comfortable, fit.
I thought I'd get this quarter-zip in medium since it was a base layer and would probably look better not baggy. I also looked at the provided measurements and they just about line up perfectly with my proportions, so I wasn't expecting any issues from this product.
However, what I got in the mail was ridiculously small. I have a few "small" -sized t-shirts laying around that honestly are easier to get into than this. It was more or less skintight, and not breathable at all.
Although I get that "medium/large" is kind of arbitrary, the provided measurements are very deceptive, as they indicate that it should be slightly roomy for me if anything. I may have gotten a mismarked/defective one, but I recommend sizing up.
Arc'teryx is a great brand, and the fabric for this top has an amazing feel and has really good warmth to it. I exchanged for a large that fit me way better. If you're in the same boat as me, where you can alternate between med/large, I recommend taking the upper limit, and perhaps even consider sizing all the way up to an XL if u want it relaxed more.
ant
Berkeley, CA
6 people found this review helpful
Customer Images
hikerdonovan
Received free product
Bentonville, AR
Stretchy, soft and snug fleece anorak
2 years ago
I have had the chance to wear this fleece around 10 times. It’s stylish enough to wear around town yet capable enough to wear skiing or backpacking. I’m slender with a 30” waist and found the small to be snug yet comfortable because the material is super stretchy. I was comfortable in camp with a lightweight undershirt and this top when it was in the 50s. The chest pocket is tough feeling and practical for chapstick and maybe a handkerchief. It’s flat seams look sharp. Time will tell, but my guess is this is going to last a long time. The one thing that could be improved are the zipper pulls which fit loosely and flop around a bit.
Age:45–54
Weight:150–175 lbs.
Height:6'1"
Yes , I recommend this product
DedBrd
update: Yukon longer than Pytheas
1 year ago
Update: Yukon/mustard colour (mar 24) is longer, thinner, stretchier and has longer sleeves than the others green one (Dec 23). Both size S Would recommend green/pytheas, would not recommend Yukon personally. Updated with photos.
Yes , I recommend this product
Originally posted on arcteryx.com
Kris Pawlak
Poland
It will last for Years
2 years ago
I purchase this zip neck on the beginning of February this year so at the end previous winter, this upgraded zip neck is 100% same as RHO AR ZIP NECK, except the color of the fabric on the chest pocket, (last year was darker). Like with the Rho Ar (Heavyweight) bottoms the top runs tight ( very close to skin) in comparison with other items such Kyanite AR or LT, which is good because you can have in results another layer of fleece over Rho AR/heavyweight zip neck top. Summarizing the only personal that I have with this top and all fleece from Arcteryx is that they do not come with cord in zip to make life easier when wearing gloves, I can forgive lack of this on the bottoms but not on the front zip and chest pocket.
Body Type:Curvy
Yes , I recommend this product
Originally posted on arcteryx.com
Ed_Tahoe
Received free product
Tahoe, NV
Removes the need for a midlayer!
2 years ago
This base layer is one I now use on every resort ski outing, as well as any instance where cold may be an issue. Even on cold days, with the wind blowing I can use this in the resort with no mid-layer and an uninsulated shell, or a thin mid layer for temps in the single digits or negative (Fahrenheit). Color: Love the color, fits well as a base layer, and the overall style has received compliments apres-ski Material and fit: This fits perfectly, can be worn on its own and not look out of place, I wear a size small and this fit well. The material is comfortable and can be worn comfortably for long periods of time. I winter camped with this for a night, and wouldn't have wished for something more comfortable or warmer. The material is also good at wicking away sweat in backcountry ventures and the zip is perfect for venting. Overall, a great, very warm baselayer, that is fitted well enough to keep me warm, but loose enough to look good. You'd be hard pressed to fins something warmer.
Age:25–34
Weight:150–175 lbs.
Height:5'11"
Yes , I recommend this product
Benno
Surrey, BC
Pilling in collar in less than 3 months
5 months ago
Super warm base layer but started pilling at collar in less than 3 months. If that bothers you then please don't buy this!!
No, I do not recommend this product
Originally posted on arcteryx.com
Response from arcteryx.com
Arc'teryx Guest Services
5 months ago
Hi there. Thanks for sharing your feedback on the Rho Heavyweight Zip Neck. We are sorry to hear that you experienced pilling in the collar and that you are disappointed. We appreciate your comments and we will make sure to pass them to our team.
ToothDoc
California
Score for Auntie Dede!
5 months ago
This is an excellent top for young men with athletic builds. For Christmas gifts, I bought one for each of my four nephews in Pytheas, a forest green shade. As I underestimated the size of one nephew and there were no more of the Pytheas, I had to buy the Phantasm…which is a gorgeous, rich color. All of the nephews love the warm, soft, but lightweight fabric, the flattering fit and and plan on wearing them for many years to come.
Age:25–34
Weight:150–175 lbs.
Height:6'0"
Yes , I recommend this product
Satisfied buyer
Alberta
Well.......it's more than a base layer
1 year ago
I'm 6'3", 210 lbs. I'd like to think myself as slim. The RHO Heavyweight Zip Neck is indeed a HEAVY base layer. It's a very thick base layer, the XL size arms are skin tight on me and the body is snug. Seems they should have compensated for the thickness of the material. This would be an excellent mid-layer if more room was provided in the arms. Impossible to wear a thin long sleeve base layer under it, must wear a short sleeve BL. Compare this to the XL RHO Hybrid 1/2 Zip base layer. Now this is as close to perfection for a base layer as I've seen. Very comfortable fit in the body and arms and warm fabric.
No, I do not recommend this product
Originally posted on arcteryx.com
DedBrd
Love the green one, mustard is floppy
1 year ago
Bought the green one in December 23 and it's nice and thick, reasonably warm, smooth to the touch and fits quite snugly. Great purchase. Really lvoed it so just bought the mustard one (Mar 24) and it's much... floppier? While the material is super soft, it's not quite as warm and thick, and isn't as stiff (so the collar flops down and the sleeves aren't as snug). Not quite sure why this is the case, but I'm much less happy with the mustard than the green one. Will ask Arc and see if there's been a design change in the last month or so. 5* for the green (Dec 23) 3.5* for the mustard (Mar 24) Averaged at 4*
Originally posted on arcteryx.com
ant
Berkeley, CA
Amazing quality but I had to exchange it first
1 year ago
I'm on the muscular side, at 5'9 and 190 pounds, but I typically fit in between a traditional "medium" or "large" size. Most of my large-sized clothes are a bit roomy but still hold well to my body, and medium typically gives a more snug and slim, yet still comfortable, fit. I thought I'd get this quarter-zip in medium since it was a base layer and would probably look better not baggy. I also looked at the provided measurements and they just about line up perfectly with my proportions, so I wasn't expecting any issues from this product. However, what I got in the mail was ridiculously small. I have a few "small" -sized t-shirts laying around that honestly are easier to get into than this. It was more or less skintight, and not breathable at all. Although I get that "medium/large" is kind of arbitrary, the provided measurements are very deceptive, as they indicate that it should be slightly roomy for me if anything. I may have gotten a mismarked/defective one, but I recommend sizing up. Arc'teryx is a great brand, and the fabric for this top has an amazing feel and has really good warmth to it. I exchanged for a large that fit me way better. If you're in the same boat as me, where you can alternate between med/large, I recommend taking the upper limit, and perhaps even consider sizing all the way up to an XL if u want it relaxed more.
Age:18–24
Weight:175–200 lbs.
Height:5'9"
Yes , I recommend this product
Anonymous
Kent, GB.
Very warm but cabt use for high output sport.
2 years ago
Really nice cozy fit and very warm but its not merino. As soon as you do one day skiing this and sweat its catches a smell really quick and clings onto it. Wore it for my first day skiing and a obviously got abit hot throughout the day. Couldnt wear it for any more days that wrrk. I stuck to my 260 knit merino top that i wore all eeek and didnt smell one bit by the end of it! As i say really warm base layer but any high output activities and its going to start to smell real quick! Wouldnt buy synthetic again for a top. Merino all the way. Highly suggest the rho heavyweight bottoms though.
No, I do not recommend this product
Originally posted on arcteryx.com
Response from arcteryx.com
CS
2 years ago
Hello there, Thank you for reaching out and sharing your feedback on the Rho Heavyweight Zip Neck. We're genuinely sorry to hear that you're disappointed and that it did not suit your needs. Our customers will occasionally read these reviews, so we appreciate it when others share their experiences with us, and we will be sure to pass your comments along to our design team. If you have any additional comments or concerns, we welcome you to contact our Customer Service team, and one of our representatives would be happy to assist you. All the best
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