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frontpage Posted by Rokket | Staff • Yesterday
frontpage Posted by Rokket | Staff • Yesterday

REI Co-op Men's Heavyweight 100% Merino Wool Base Layer Half-Zip Top (2 Colors)

+ Free Store Pickup

$50

$105

52% off
REI
14 Comments 11,873 Views
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Deal Details
REI has REI Co-op Men's Heavyweight 100% Merino Wool Base Layer Half-Zip Top (Red or Blue) on sale for $49.83. Select free store pickup where available or shipping is free on orders $60+.
  • Note: Sizing and availability may vary.
Thanks to Deal Hunter Rokket for sharing this deal.

Available colors/sizes:
  • Sequoia Red: S, M, L, XL, XXL, XXXL
  • Sargasso Sea (Blue): M, L

Editor's Notes

Written by citan359 | Staff
  • About this Store:
  • Additional Information:
    • Rated 3.9 out of 5 stars at REI based on over 10 customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by Rokket | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
REI has REI Co-op Men's Heavyweight 100% Merino Wool Base Layer Half-Zip Top (Red or Blue) on sale for $49.83. Select free store pickup where available or shipping is free on orders $60+.
  • Note: Sizing and availability may vary.
Thanks to Deal Hunter Rokket for sharing this deal.

Available colors/sizes:
  • Sequoia Red: S, M, L, XL, XXL, XXXL
  • Sargasso Sea (Blue): M, L

Editor's Notes

Written by citan359 | Staff
  • About this Store:
  • Additional Information:
    • Rated 3.9 out of 5 stars at REI based on over 10 customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.

Original Post

Written by Rokket | Staff

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14 Comments

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Yesterday
8,787 Posts
Joined Nov 2013
Yesterday
Adelley
Yesterday
8,787 Posts
I think a good sign of quality merino is whether they list the microns or not.. Here they don't, which isn't a good sign.
1
Yesterday
109 Posts
Joined Jan 2005
Yesterday
detpyrcne
Yesterday
109 Posts
Quote from Adelley :
I think a good sign of quality merino is whether they list the microns or not.. Here they don't, which isn't a good sign.

I didn't notice, thanks! What size is good?
16h ago
65 Posts
Joined Jan 2016
16h ago
ApprovingPanda
16h ago
65 Posts
I ended up with the pull-over version of this shirt as a free review sample when REI introduced this most recent generation of their merino wool base layers, and I absolutely love it. Liked it enough that I planned on buying another immediately, only to pause at the price.
Comparing the description and specs of the fabric of the shirt I have and this half-zip, it appears to be the same material.
But at less than half price, I'm getting another pull-over, and one of these half-zips.

Pull over version I can personally vouch for:
https://www.rei.com/product/23496...2349630020
15h ago
20 Posts
Joined Jan 2024
15h ago
RelaxedMountain6845
15h ago
20 Posts
Quote from ApprovingPanda :
I ended up with the pull-over version of this shirt as a free review sample when REI introduced this most recent generation of their merino wool base layers, and I absolutely love it. Liked it enough that I planned on buying another immediately, only to pause at the price.
Comparing the description and specs of the fabric of the shirt I have and this half-zip, it appears to be the same material.
But at less than half price, I'm getting another pull-over, and one of these half-zips.

Pull over version I can personally vouch for:
https://www.rei.com/product/23496...2349630020

How do you end up with a review sample?
15h ago
91 Posts
Joined Jun 2022
15h ago
EfficientCheetah827
15h ago
91 Posts
Quote from RelaxedMountain6845 :
How do you end up with a review sample?

Yeah no shit. How?!?
14h ago
338 Posts
Joined Mar 2019
14h ago
DJ18
14h ago
338 Posts
Thanks in for one!

Free shipping for REI members, otherwise free over $60 looks like.
9h ago
315 Posts
Joined Sep 2012
9h ago
secretwanderer
9h ago
315 Posts
Quote from Adelley :
I think a good sign of quality merino is whether they list the microns or not.. Here they don't, which isn't a good sign.

On "features" section they say 250g

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9h ago
9,447 Posts
Joined Dec 2010
9h ago
yangzi
9h ago
9,447 Posts
Quote from Adelley :
I think a good sign of quality merino is whether they list the microns or not.. Here they don't, which isn't a good sign.

"Heavyweight 250 g merino wool offers a soft feel without the scratchiness"

I don't agree with your statement. I wear a lot of wool clothes from different brands. I wear wool clothes everyday. Eileen Fisher is higher end women's wool clothing company with good quality wool. They don't list gsm.
Last edited by yangzi April 7, 2025 at 12:05 PM.
7h ago
8,787 Posts
Joined Nov 2013
7h ago
Adelley
7h ago
8,787 Posts
Quote from yangzi :
"Heavyweight 250 g merino wool offers a soft feel without the scratchiness"

I don't agree with your statement. I wear a lot of wool clothes from different brands. I wear wool clothes everyday. Eileen Fisher is higher end women's wool clothing company with good quality wool. They don't list msg.
Microns is an important measurement for baselayers that is touching your skin.

The more fine then the more softer it feels while higher microns it'll feel itchy. Seems like an important number
1
5h ago
1,074 Posts
Joined Mar 2008
5h ago
lyrebird
5h ago
1,074 Posts
Quote from Adelley :
Microns is an important measurement for baselayers that is touching your skin.

The more fine then the more softer it feels while higher microns it'll feel itchy. Seems like an important number
I don't see or notice any underwear advertise this. In general merino is super soft and very warm+comfortable (well, depending on weight of course). I have been using merino stuff through a couple winters and never wanted to reach my other synthestic unders such as UA's base layer.
4h ago
9,447 Posts
Joined Dec 2010
4h ago
yangzi
4h ago
9,447 Posts
Quote from Adelley :
Microns is an important measurement for baselayers that is touching your skin.

The more fine then the more softer it feels while higher microns it'll feel itchy. Seems like an important number

I thought gsm shows how thick the fabric is. The higher the number, the fabric is thicker, therefore warmer. I have many wool base layers and non-base layers in different msg with different warmth.

Wool base layer with 150 gsm doesn't feel any rougher or softer than 300 gsm jacket or leggings I have. Or vice versa.

EDIT:
"In the context of wool fabrics, GSM stands for "grams per square meter" and indicates the weight of the fabric, with higher GSM values generally signifying a heavier, thicker, and potentially warmer fabric. "
Last edited by yangzi April 7, 2025 at 12:08 PM.
3h ago
80 Posts
Joined Jan 2022
3h ago
TenderJoke7900
3h ago
80 Posts
Quote from yangzi :
I thought msg shows how thick the fabric is. The higher the number, the fabric is thicker, therefore warmer. I have many wool base layers and non-base layers in different msg with different warmth.

Wool base layer with 150 msg doesn't feel any rougher than 300 msg jacket I have.
I'm not sure what "msg" is supposed to be. I'm used to Merino (and various other insulating materials) being expressed in grams per square meter. And in Merino I can't recall ever seeing anything but 150 for the light stuff, 250 for the heavier stuff.
40m ago
9,447 Posts
Joined Dec 2010
40m ago
yangzi
40m ago
9,447 Posts
Quote from TenderJoke7900 :
I'm not sure what "msg" is supposed to be. I'm used to Merino (and various other insulating materials) being expressed in grams per square meter. And in Merino I can't recall ever seeing anything but 150 for the light stuff, 250 for the heavier stuff.

Sorry. Typo. GSM.

"In the context of wool fabrics, GSM stands for "grams per square meter" and indicates the weight of the fabric, with higher GSM values generally signifying a heavier, thicker, and potentially warmer fabric. "

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