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Women's Base Layer Midweight LS 1/2 Zip
Women's Baselayer Midweight Long Sleeve 1/2 Zip
$69.99
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Omni-Heat Reflective Baselayer
What’s next to your skin sets the stage for your comfort: don’t mess around. Developed with top physiologists, Columbia’s new baselayer series offers maximum warmth, minimum weight, and zoned performance for optimal comfort.  more less
 
Style#: AL6655
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Our technology, at work for you

Omni-Heat-Reflective

Omni-Heat® Thermal Reflective – Keep Your Warmth, Not Your Sweat
This technology helps regulate body temperature by reflecting and retaining the warmth you generate, while dissipating moisture and excess heat.

Learn More ››

Omni Wick

Omni-Wick® - Advanced Evaporation
Moisture transferring technology that moves and disperses sweat away from the body for quick evaporation, keeping you comfortable during physical activity.

Learn More ››

People Who Viewed Also Viewed

ColumbiaWomen's Baselayer Midweight Long Sleeve 1/2 Zip
Overall Rating 
4.3 / 5
4.3 / 5
(10)
Open Ratings Snapshot
Rating breakdown 10 reviews
5 Stars
6
4 Stars
2
3 Stars
1
2 Stars
1
1 Star
0
Fit: 
Too Small
3.3 / 7
True to Size
Too Large
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
4.7 / 5
4.7 / 5
Function
How well this item performed in its intended use, and beyond.
 
4.3 / 5
4.3 / 5
9 out of 10(90%)customers recommend this product.
10
10 What’s next to your skin sets the stage for your comfort: don’t mess around. Developed with top physiologists, Columbia’s new baselayer series offers maximum warmth, minimum weight, and zoned performance for optimal comfort.
Overall Rating 
4.3 / 5
4.3 / 5
(10)
Open Ratings Snapshot
Rating breakdown 10 reviews
5 Stars
6
4 Stars
2
3 Stars
1
2 Stars
1
1 Star
0
Fit: 
Too Small
3.3 / 7
True to Size
Too Large
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
4.7 / 5
4.7 / 5
Function
How well this item performed in its intended use, and beyond.
 
4.3 / 5
4.3 / 5
9 out of 10(90%)customers recommend this product.
Product Reviews Summary
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Ratings summary
Overall Rating 
4.3 / 5
4.3 / 5
(10)
Open Ratings Snapshot
Rating breakdown 10 reviews
5 Stars
6
4 Stars
2
3 Stars
1
2 Stars
1
1 Star
0
Fit: 
Too Small
3.3 / 7
True to Size
Too Large
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
4.7 / 5
4.7 / 5
Function
How well this item performed in its intended use, and beyond.
 
4.3 / 5
4.3 / 5
9 out of 10(90%)customers recommend this product.
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Product ReviewsWrite a review
Overall Rating 
4 / 5
4 / 5
high tech breathability
PostedDecember 16, 2011
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Stickytwigg
 
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Location: Hannibal, MO
Outdoor Experience: Professional Thrill Seeker (outdoors 53+ days a year)
Employee: No
Fit: 
Too Small
Fits Slightly Small
True to Size
Too Large
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
4 / 5
4 / 5
Function
How well this item performed in its intended use, and beyond.
 
4 / 5
4 / 5
This shirt is thinner than I expected but works perfectly as a base layer. It fits a little tighter under the arms than I like but is still comfortable for running, hiking and other exercise. Also I wish the collar would lay flatter when unzipped. However neither of these concerns outweighs the coolness factor of the remarkable lining. Because of its breathability this shirt alone won't keep you toasty warm if you are just sitting around, but it will reduce the bulk and possibly the number of layers you'll need to use on a cold outdoor run.
Activities: Trail, Canoeing, Hiking/Trekking, Camping, Running
Conditions: Snowy, Windy, Freezing, Rocky
I would recommend this product.
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Overall Rating 
3 / 5
3 / 5
Tight raglan sleeve shouldrers
PostedDecember 12, 2011
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Melly
 
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Fit: 
Too Small
Fits Slightly Small
True to Size
Too Large
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
4 / 5
4 / 5
Function
How well this item performed in its intended use, and beyond.
 
3 / 5
3 / 5
Very disappointed in this base layer top. Raglan sleeve shoulders were tight. Material was not as supple as expected. Actual color/fabric was ugly unless you are a teen.
Activities: Skiing
Conditions: Freezing
I do not recommend this product.
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Overall Rating 
5 / 5
5 / 5
Great running shirt!
PostedDecember 12, 2011
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Goddess61
 
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Location: Portland, OR
Outdoor Experience: Everyday Adventurer (outdoors 20-52 days a year)
Employee: No
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
5 / 5
5 / 5
Function
How well this item performed in its intended use, and beyond.
 
5 / 5
5 / 5
I have two girls who run track and play soccer. This shirt is a great single layer or base layer under a sweatshirt for their athletics. LOVE IT!
Activities: Running
Conditions: Sunny, Snowy, Rainy, Freezing
I would recommend this product.
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Overall Rating 
5 / 5
5 / 5
Excellent base - plus thumb holes!
PostedDecember 10, 2011
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Live2Run
 
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Location: PA
Outdoor Experience: Professional Thrill Seeker (outdoors 53+ days a year)
Employee: No
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
5 / 5
5 / 5
Function
How well this item performed in its intended use, and beyond.
 
5 / 5
5 / 5
Highly recommend this baselayer. I LOVE it for running - in colder temps, I wear as a base with a thicker fleece. Wicks the sweat and keeps me warm even on longer runs without adding bulk. I also wore it in September while hiking 14ers in CO. Favorite part - the thumb holes!
Activities: Hiking/Trekking, Running
I would recommend this product.
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Overall Rating 
4 / 5
4 / 5
I really like!
PostedDecember 2, 2011
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Kim4
 
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Location: Wisconsin
Outdoor Experience: Everyday Adventurer (outdoors 20-52 days a year)
Employee: No
Fit: 
Too Small
True to Size
True to Size
Too Large
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
5 / 5
5 / 5
Function
How well this item performed in its intended use, and beyond.
 
4 / 5
4 / 5
I wore top and bottom during the 2011 WI deer hunting season, 10 days straight, 12 hrs/day. I washed it every other day by hand and hung to dry near a wood stove and kept it's shape and fit. Wicking ability was great! Both pieces are extremely comfortable. No itchy, bulky seams, riding up/down nor irritating zipper at neck.
I'm not convinced I was warmer but the temperature range was warm, 22 - 36 degree F so it wasn't a good test for me. That's the only reason I didn't give it 5 stars.
Activities: Hunting Big Game
Conditions: Snowy, Freezing
I would recommend this product.
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Overall Rating 
5 / 5
5 / 5
Great for running
PostedNovember 18, 2011
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oregonrun
 
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Location: Portland, OR
Outdoor Experience: Everyday Adventurer (outdoors 20-52 days a year)
Employee: No
Fit: 
Too Small
Fits Slightly Small
True to Size
Too Large
Quality
How would you grade this itemʼs materials, construction and workmanship?
 
5 / 5
5 / 5
Function
How well this item performed in its intended use, and beyond.
 
5 / 5
5 / 5
Tested this top out on my run the other day in 42 degree weather. Started out freezing since I just wore this as a running top, but once I warmed up, it kept me nice and comfortable throughout (I get really hot while running). Gave nice flexibility all over and the thumbholes were a great add to keep my hands warm. Would use this as a base in colder temperatures.
It also does run a little small. I'm 5'5" and 120lbs. I usually wear a small, but decided to go for the medium for a bit of a looser feel.
Activities: Trail, Hiking/Trekking, Running, Snowboarding
I would recommend this product.
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Overall Rating 
5 / 5
5 / 5
Great Base Layer
PostedOctober 22, 2011
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UpNorthGirl
 
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I agree that this runs small. I wear a 6 or 8 and the medium was too small. The large fits me well and I am very pleased with the performance. I wear it around the house a lot because I hate bulky sweatshirts and this keeps me warm. Great under a jacket for dog walking too.
I would recommend this product.
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Overall Rating 
5 / 5
5 / 5
A good bottom layer
PostedOctober 17, 2011
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cait
 
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Location: Duluth
This is the perfect fit for a first layer. It's snug and warm and great for warming up in!
I would recommend this product.
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Overall Rating 
5 / 5
5 / 5
I love my Baselayer
PostedAugust 10, 2011
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portlandia77
 
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Location: Portland OR
This fits just how a baselayer should close to the body to help keep the heat it. I can definitively feel the difference with the omniheat I wear an extra small and Columbia usually runs big on me but this is great!
I would recommend this product.
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Overall Rating 
2 / 5
2 / 5
Tight around arms
PostedAugust 2, 2011
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Terri1
 
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I'm a basic XL, not fat, just big. While I love the style, the arms were amazingly tight for the entire length. It was also very snug around the chest and waist, and not suitable for wearing without a vest or some cover over it. Not willing to "bare it all".
I would recommend this product.
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