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  • Arc'teryx - Rho LT Zip-Neck Top - Men's - Iliad
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Arc'teryx Rho LT Zip-Neck Top - Men's


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    37 Reviews


    Rho LT Zip Neck Top

    Start your winter layering off right with the Arc'teryx Rho LT Zip Neck Top. The Torrent polyester and elastane fabric ensures plenty of warmth, soft next-to-skin comfort, and all the freedom of movement you need for alpine skiing, ice climbing, hiking, and other low-to-moderate-output activities. Arc'teryx added a laminated chest pocket, flatlock seams, and underarm gussets to set this top apart from all the other shirts out there, and finished it with Polygiene odor-controlling technology so you can wear it during your six-day hut trip without starting to attract bears with your scent.

    • Lightweight baselayer for low-output activities in cool weather
    • Soft brushed fabric wicks sweat and dries quickly
    • Next-to-skin fit aids thermal efficiency and moisture management
    • Flatlock seams won't irritate of chafe skin
    • Zip neck allows rapid ventilation
    • Tall collar adds extra warmth
    • Polygiene treatment fights off odors
    • Item #ARC00B9

    Tech Specs

    Torrent (84% polyester, 16% elastane)
    Insulation Weight
    1 zippered chest
    Claimed Weight
    [medium] 7.6oz
    Recommended Use
    hiking & camping, skiing, snowboarding
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

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    Another Arcteryx Masterpiece

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Xl
    • Height: 6'3"
    • Weight: 195lbs

    This is a true base layer. Wear it next to skin for optimal effect. The high elastane (spandex) content makes it really stretchy and allows great motion. For cold weather, layer over with a fleece mid. Also, it’s quite long in the body if you choose to tuck it in.
    Looks great under a shell too.
    Note well: it won’t hide any rolly-poly areas if you catch my drift.
    I wear it in XL and I’m 6’3 and 195 lbs.

    Great Lt. Wt. 1/4 zip.

    • Familiarity: I've used it several times
    • Size Bought: L
    • Height: 6'3"
    • Weight: 190lbs

    In a sea of sameness the bonded pocket and attention to detail makes this stand out. As always Arcteryx delivers top quality

    A little thicker for those colder days

    • Height: 6'1"
    • Weight: 174lbs

    I haven't been able to use this for my intended use yet, really cold trail running, but have been really happy with how warm this has been on hikes and ski tours so far! I have hiked in the Rho LT in a snow storm in the 20's with just a light tech t underneath, and although I did sweat a bit I was nice and toasty on the downhill. The brushed fleece on the inside of the Rho lt is so comfortable. I went with the medium for a trim fit, but could have easily have went with the large. My only nit pick is that the pocket is so small, it would be great to fit my phone in but right now its just good for lip balm. Overall a great layer, and I cant wait to use it for winter trail running in the teens and below!

    It's Arc'teryx!

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: Large
    • Height: 6'1"
    • Weight: 195lbs

    Plain simple, these are an amazing base layer! I have 3 different colors and I wear them all the time! Obviously not all at the same time but like I said they're amazing! I've worn these as a base layer or just stand alone in cool temperatures and have never been cold. They're a great quality and I'm definately happy with the 3 I've purchased. They're even better when you catch them on sale.

    The best

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: Small
    • Height: 5'9"
    • Weight: 155lbs

    This is the best base layer on the market. I have now purchased multiple sets of the Rho LT and use it for cold weather running, skiing, and any activity where I am sweating and it’s cold. You are seriously not going to go wrong here.

    Best Base Layer

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Height: 6'1"
    • Weight: 195lbs

    Fit's true to size with a bias toward an athletic cut. I have a couple of these and wear them weekly for dawn patrol ski tours and evening mountain biking. This is the best base layer on the market.

    Arc'teryx speaks for itself!!!

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: medium
    • Height: 6'1"
    • Weight: 175lbs

    Not much I can say when it comes to Arc'teryx the name speaks for its self. Best fitting base layer. Comfy and stretches to allow optimal movement. super warm. worth every penny.

    The best base layer

    • Familiarity: I've put it through the wringer
    • Fit: Runs large
    • Size Bought: Small
    • Height: 5'8"
    • Weight: 150lbs

    This is my go to base layer when I am out skiing. It is super warm and is cut longer so that I can tuck it into my long underwear. It is a little too warm for winter trail running unless the temperature is well below zero, but it works perfectly as a base layer for touring when I don't want to layer up.

    Rho LT top - not perfect

      Picked this up on SAC a while ago.

      I like the Powerflex Fabric. It stretches well and has good warmth for the weight in dry conditions (see below).

      I have two quibbles with the Rho LT, however. First, the shirt is short. While it has the no-lift gusset design, the hem of the shirt is already above my belt-line, so unless I'm wearing bibs (and I am, usually), my waist gets exposed. It fits well in other dimensions - sleeve length, chest size - but the torse is just too short for me. Second, the fabric is slow to wick. On a skin track, I sweat. The Rho soaks through quickly, rather than transporting moisture for evaporation. That makes for a cold panda when skinning gives way to making turns.

      I've never given an Arcteryx item three stars before, but it seems the Rho LT top was just not made for me. I've started switching to merino and I've found that I'm comfortable in a wider range of temperatures and moisture levels in wool than in the Rho LT. Perhaps the Rho LTW would be a worthy upgrade.

      like an old blanket

        ........but doesnt fit like a blanket; standard fit. like most Arc products this a high quality piece of gear. Super warm, super soft next to skin. I would not recommend this for use over 32dF, high aerobic activity, its just too warm. my primary uses are back country winter hiking in WVA and long cold days on the lifts as a baselayer. with the discontinued colors on sale, I will be purchasing another.


          Another excellent item from Arcteryx , quality of workmanship and fabric is 5*. I am always in between sizes with their products, "L" tops are always slightly too big. However LT Zip is almost too tight! I am 5.10 and ~ 185 and this top is like second skin. I don't understand Arcteryx's sizing, total lack of consistency.

          Good, but there are better/cheaper options

            I have had this for about a year. I am 6' 205#s and the xl is pretty snug. As a baselayer it does it's job. I would call this medium weight. That being said, I just got the Stoic merino wool zip neck and I like it better and it's cheaper. Also, I don't know how to explain this, but the material of the Rho snags on dry skin, no big deal, but unpleasant.

            o.k. base layer

              If color is imperative then this will work fine. Just o.k. in the warmth and wicking department. The Arcteryx LTW with real merino wool smokes this and fits a ton better too. Have owned several LT and LTW tops. If you work hard as a skier on back country hikes to get to your stash or skinning the LTW will dry way quicker and is warmer in a good way. Seems to regulate your body heat better. I'm 5'11 162-165 with long arms and broader shoulders. I order large in base layers and medium in outer. The LTW stretches and hugs your body better. The neck on the LTW isn't sloppy like the current LT. Had LT's before and the cut seemed to be better than the current issue.


                Just got one of these, and the fit and quality are typical of arcteryx (better than pretty much anyone else). The material is quite light, but provides a fair bit of warmth. Likely to be a bit too hot if you are really working. Does not bind under other jackets. beware, the size chart is a bit misleading, as I would personally go for the next larger size than what is recommended, especially if you are tall. I have a 38 chest, so I ordered the small, which felt like it was painted on and did not even cover my belly button.

                Best shirt in the world

                  Bought two now. One for husband, one for Dad. Soft, VERY warm, stylish, and light/compact. Does well in washer/dryer. Have been happy with all Arcteryx gear. Although expensive... worth every penny. Especially when living in cold northern climates