Arcteryx Men's RHO LTW Zip Top

Arcteryx Men's RHO LTW Zip Top is rated 4.742857142857143 out of 5 by 35.
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Product Description Item No.   10017480

The Men's Rho LTW Zip by Arcteryx is the ideal base layer for any activity. Itchless, stretch knit Merino Wool insulates when saturated, and its natural fibres won't stink even on lengthy trips. The men's version features a half zip.

FEATURES of the Arcteryx Men's RHO LTW Zip Top

  • Warm-when-wet
  • Minimal odor retention
  • No-lift gusseted underarms
  • Chest half zip
  • Mountain Merino wool/spandex blend fabric has a great warmth-to-weight ratio
  • Stays warm when wet and doesn't retain odors
  • One laminated chest pocket with laminated zipper
  • Chest half-zipper for improved venting, easy on/off
  • Gusseted underarms for increased mobility
  • Activity: All Around

- + Product Specifications
Disclaimer: We only ship this brand to US Addresses.
Gender: Mens
Zip: 1/4

Men's Jackets, Shirts and Tops
SIZE X-Small Small Medium Large X-Large XX-Large
Chest 36" 38" 40" 43" 46" 50"
Waist 29" 31" 33" 36" 39" 43"
Hip 36" 38" 40" 43" 46" 50"
Sleeve Length 32" 33" 34" 35" 36" 37"
Numeric Size 36 38 40 43 46 50

• Arc'teryx recommends you calculate your body measurements using the info in the Measurement Guide below before selecting a product size. The measurements provided in their size guides refer to your body measurements unless otherwise specified.

• Check the fit type in the product FEATURES and SPECIFICATIONS and refer to the Fit Guide below to ensure you are ordering a product for the correct end use.

Men's Pants
SIZE X-Small Small Medium Large X-Large XX-Large
Waist 29" 31" 33" 36" 39" 43"
Hip 36" 38" 40" 43" 46" 50"
Length (Short) Subtract 2"
Length (Regular) 30 1/2" 31 1/8" 32 3/8"
Length (Long / Tall) Add 3"

• Please note that the actual pant length may vary slightly from the info above, depending on the intended end use of the product.

Men's Numeric Pant Sizing
SIZE 28 30 32 34 36 38
Waist 28" 30" 32" 34" 36" 38"
Hip 35" 37" 39" 41" 43" 45"
Inseam 32" 33" 34" 35"

• Several models of Arc'teryx pants are sized numerically and available in different inseam lengths. You will see these sizes reflected in the options in the Select a Size drop down menu for particular products.

• For all other pants available in numerical waist sizes where the inseam length is not specified, the inseam lengths provided above apply.

SIZE Small / Medium Large / X-Large
Head Circumference 21.7 - 22.4" 22.8 - 23.6"
Men's Gloves
SIZE X-Small Small Medium Large X-Large
Hand Width 7.6 - 7.9" 7.9 - 8.2" 8.2 - 8.6" 8.6 - 8.9" 8.9 - 9.3"
Hand Length 7 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8" 8 - 8.2"
Unisex Gloves
SIZE X-Small Small Medium Large X-Large
Hand Width 7.3 - 7.6" 7.8 - 8.1" 8.2 - 8.6" 8.6 - 8.9" 8.9 - 9.3"
Hand Length 7 - 7.2" 7.2 - 7.5" 7.5 - 7.7" 7.7 - 8" 8 - 8.2"


Chest / Bust - Measure around your chest / bust, holding the measuring tape under your armpit.

Waist - Measure around the natural waist, which is often the narrowest part of your waist.

Hip - Measure around your hips at the widest part.

Sleeve Length - With your arms in a slightly bent position, measure from the center of the back of your neck, along the length of your arm, to the wrist.

Inseam / Pant Length - From a standing position, measure from your crotch to your ankle.

Head Circumference - Measure the full circumference around the widest part of your head.

Hand Length - Measure from the tip of your middle finger to the base of the palm.

Hand Width - Measure the circumference of your hand around the knuckles, excluding the thumb.

• Please note that all the info provided above refers to body measurements, and NOT the dimensions of the garment.


Next to Skin Fit - These snugly-fitting garments are made with stretch fabrics to fit next to the skin to enhance moisture management and thermal efficiency. Garments in this fit category when constructed using Arc'teryx's heavier-weight AR and SV fabrics also perform very well as mid layer pieces, and users should consider selecting a larger size to accommodate a base layer underneath if the intention is to use this layering system as a mid layer option.

Trim Fit - Trim-fitted garments share the motion-friendly traits with Arc'teryx "Athletic" fit garments, but are patterned with lower volume for reduced bulk. These close-fitting pieces layer well under other garments.

Athletic Fit - This is the "Arc'teryx Standard" fit. These complete patterns utilize anatomical shaping and gussets to enhance motion by minimizing excess bulk. Easy layering under or over each item extends seasonal versatility and comfort.

Relaxed Fit - Relaxed fit garments rely on higher volume patterns and a reduced amount of articulation to offer roomy mobility.

Expedition Fit - Cut roomier than the Arc'teryx Athletic fit and suitable for winter/extreme conditions, Expedition (XPD) fit garments are cut larger to accommodate multiple layers without binding or restricting movement.

• You can find the fit type and additional fit info for Arc'teryx styles in the product description FEATURES and SPECIFICATIONS.

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Rated 4 out of 5 by from Great baselayer, but not the best for cold conditions I thought the base-layer would resemble and function like Underarmour's Cold-gear. But it's actually more like Underarmour's Heat-gear, in my opinion. Took it to Jackson, Wyoming and it did its job. But my Cold-gear worked better. Except for when it got hot, then this was the base-layer of choice. It also looks better than the Underarmour products, in my opinion. I've had lots of compliments on it. I use it for rock climbing as well. I would recommend purchasing it if you can get it for under $120. A bit too pricey for what I don't think of as too high end of a product. $60 - 80 is where I would see it. I also washed it and it came out with those little cotton balls all over it.
Date published: 2012-03-11
Rated 5 out of 5 by from Better than American Express for Men I never leave home without it. It is packable, quickdrying, and odor-defying. I've found the wool to be comfortable. The garment keeps it's shape very well as others have acclaimed. The sizing is accurate to the arcteryx sizing. The style is form-fitting, and the bottom runs a to the hip(unlike the non-wool Rho LT that runs to the waist). It is very warm, but breathes well. The collar zip vents well, and the pocket is perfect for a credit card wallet or money clip. The color choices allow you to go bold if you want or just keep it on the down low. One of my favorite pieces of clothing and worth the price.
Date published: 2008-11-10
Rated 5 out of 5 by from Light yet warm The RHO LTW top and bottom make a great base layers.,,The ant-microbial claims of wool are true. You can get stinky one day and the next morning they doesn't smell. ,,I've been told that wool (unlike synthetics) can start to wick sweat vapor before it starts to coalesce into sweat beads While I am not an expert on this, I am certainly inclined to believe this based on empirical observation. I went on a moderate hike just the other day and I never noticed any sweat beads forming. At the end of the hike I was getting very warm and opened the zipper on the jersey and dumped a bunch of heat. ,,All in all, I am very pleased. I've had both RHO LTW products now for 2 months and love them both.
Date published: 2013-01-02
Rated 5 out of 5 by from Warm, Wicking, Wow... so glad I broke down and bought it!!! Michigan winters can be unpredictable--cold/not cold, snow/not snow--but this mid-to-lightweight top takes the guess work out of my winter runs. I'll admit this is my first merino wool shirt, but after the Arcteryx Rho LT Zip helped my climb to the top of the Sierra Madres, I decided that the LTW could at least keep me warm back here in Michigan. And it didn't disappoint!!! ,,It is just as form fitting and comfortable as its lighter-weight brethren and is just as flexible and giving. It wicks with the best and regulates my body temp on my coldest runs (with a lightweight windbreaker jacket over top). So comfortable I would recommend it for a winter marathon or on colder climbing days!!!
Date published: 2012-01-02
Rated 4 out of 5 by from Worth the $$$$ This product is legitttttttt,,,,Pros: keep you nice and warm, made out of merino wool, nice cut, skin tight fit designed to keep you warm, can be worn as a base layer or stand alone because it looks very nice and fashionable. ppl say the arm run too long?? for me YES this is true the sleeve runs a bit long. This perfectly make sense because if the shirt shrink the sleeve will not be too short.,,,,Cons: for some reason the wool material from this company itch a bit. Well I guess wool will give you that kind of effect but compare to Smartwool brand base layer.
Date published: 2010-08-17
Rated 5 out of 5 by from Best wool baselayer I've worn this zip up in balmy, summer weather, week long winter camping trips, and everything in between. It fits great on anyone with an athletic build and has longer arms to accomodate us gorillas! Put this under a regular jacket and you will be warm in snowy conditions. Wear this with a tshirt in the spring or fall and stay cozy! Very durable as well, despite the few holes I've picked up snagging it on rocks, trees, and barbed wire fences. I just picked up another one!
Date published: 2012-10-25
Rated 5 out of 5 by from Outstanding, Teryx does it again! I love this Baselayer! It works great under a jacket or sweatshirt during intense outdoor fun, or it works by itself if you're just running outside in the snow to get the mail. Keep in mind that it is tight, so if youre wearing more than a simple shirt underneath, it can get a little tight. The pocket is also great for energy bar storage.,,,,6'2 and 170, Medium fits great.,,,,I highly reccomend this to anyone who likes to stay warm!,,,,
Date published: 2011-01-19
Rated 4 out of 5 by from Baaaaaa!!!! As I’ve found with most Arcteryx gear the fit of this top is really nice. A great size across the shoulders and excellent arm length, allowing for good reach and it’s not loose around the waist.<BR><BR>The wool blend is particularly nice as it doesn’t get nearly as stinky as my synthetic equivalents. <BR><BR>I’ve only had it for a month so can’t say too much on the durability but it appears built to last.
Date published: 2005-12-05
  • 2016-08-07T09:53CST
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  • clientName_moosejaw

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