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Women’s Heavyweight II Baselayer Long Sleeve Half Zip Shirt


https://www.columbia.com/womens-heavyweight-ii-baselayer-long-sleeve-half-zip-shirt-1638961.html 1638961
$34.98 $70.00
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Style# 1638961
Uses Winter


Now with thumbholes, this performance fit baselayer wicks sweat and is built for warmth and mobility with a blend of stretchy, heat-retaining thermal reflectors and ergonomic seaming. Dressing in layers is key when it comes to adapting to the changing conditions.

  • Omni-Heat™ thermal reflective
  • Omni-Wick™
  • Antimicrobial treatment protects this product from bacterial growth
  • 4-way comfort stretch
  • Ergonomic seaming
  • Flatlocked construction
  • Thumb holes
  • Performance Fit
  • Center Back Length: 26"
  • Imported
  • Uses: Winter
  • Style# 1638961

  • 85% polyester / 15% elastane stretch waffle Omni-Heat Reflective™
  • 85% polyester / 15% elastane Omni-Wick™ Stretch Jersey
High-Performance Wicking Fabric

Technology Videos

Play youtube video about Omni-Wick (tm)
Pulls moisture away from the body so sweat can evaporate quickly.


Women’s Heavyweight II Baselayer Long Sleeve Half Zip Shirt is rated 4.4 out of 5 by 36.
Rated 5 out of 5 by from SO Warm!! I wouldn't have made it through the night without this top! I love the fact that it has Omni-heat technology and uses my own body heat to keep me warm, particularly at night when it's 38* and you're sleeping in a tent. The tops are comfortable, relaxed. This model allows to zip up/down quarter way so you can air out a little if you need to cool off some. Sometimes I wear a tank under it versus direct body contact - like my own temp control. Thumb holes are nifty. I'm so glad I discovered these from Columbia! (Yes, plural. I have a few!)
Date published: 2018-08-11
Rated 5 out of 5 by from Great quality material Great quality. Soft, comfortable and has a very nice fit for the womans body.
Date published: 2018-07-23
Rated 5 out of 5 by from Warm and Comfortable I hesitated about the size after reading the reviews but went ahead and ordered the small because I wanted to layer it for a backpacking trip to Italy. I typically wear a small but occasionally need to go up to medium. I am 5'8" and weigh about 127. The small does fit close to the body, but not uncomfortably so and the arms with thumb holes fit perfectly and I have long arms. If you don't want the top to fit too closely you might want a medium. I live in Minnesota so warm is good! I actually tried to order more because I am very happy with it, but currently not available.
Date published: 2018-02-23
Rated 4 out of 5 by from Nice baselayer Wish I waited the price got cheaper. Bought this to wear in Canada
Date published: 2018-02-15
Rated 5 out of 5 by from Heavyweight II Long Sleeve Hal Absolutely love this top. Bought Blue XS and it's great. Very fitting and warm.
Date published: 2018-02-15
Rated 5 out of 5 by from Baselayer Love the thumb holes. It is light weight and warm. Fits snug. If you don’t like your clothes to fit tight then size up on the product. It is a great snug fit though for layering and keeping body heat in.
Date published: 2018-02-11
Rated 5 out of 5 by from Warm, comfortable Great baselayer. Warm and comfortable. Recommend.
Date published: 2018-02-04
Rated 5 out of 5 by from Warm, Neat Looking Comfy After Work Shirt Wanted to be warm and look 1/2 decent after getting home from work instead of baggy fleece. This does just that and looks good to go out in.
Date published: 2018-01-28
Rated 5 out of 5 by from Great base layer I confess I'm obsessed with Omni-heat and thrilled to have them as my new base layer. Why? They work to keep my own heat in and I'm toasty and warm versus cranky and cold! I ordered the small and it fits perfect. My usual pant size is 4 or 6.
Date published: 2018-01-26
Rated 5 out of 5 by from Great Thermal, Runs small This is a great product to wear underneath ski gear. It does keep you warm, but not warm enough if this was the only thing you were wearing to ski in. It does run on the smaller size (especially under the arms), and I wear a small for a top regularly. However it is comfortable, great color and awesome for the price.
Date published: 2018-01-22
Rated 5 out of 5 by from Very comfortable and warm I bought a shirt like this several years ago and the fabric has changed so it isn’t quite aswarm for those of you who also have one but it is still warm, especially considering how light weight it is. Just be aware it does run small unless you like your clothes tight.
Date published: 2018-01-21
Rated 5 out of 5 by from My favorite winter base layer, hands down. This shirt reduces the amount/bulk of layers I need under coats. I wear it under various coats, including an old Columbia 650 turbodown coat when temps drop below 20 degrees F. This gives me 2 layers of Omni-Heat, with just a basic-weight sweater in between to help trap my body heat. As long as I move around—just walking does the trick—I stay warm. If I get too warm, I just unzip the shirt a bit to vent some heat. (Heh, in these temps, I can count the number of times I’ve done that on one hand.) Normally I’d complain about the lack of petite sizes, because super long arms and shirt hems are often annoying. But this shirt fits so close to the body, the extra length isn’t problematic for me. Besides, I kinda like that the hem covers my butt in cold weather. The upper arms are a bit snug on me, almost like a compression-fit workout top (not really that tight though, at least not to me), but the raglan sleeve design helps me feel more comfy and gives me full range of motion—so I never feel like there’s a ton of tight, bunched-up fabric in my armpits. The Omni-Heat lining never feels itchy against my skin. That’s saying a lot, because various things make me itchy, including most clothing tags. This shirt has 3 long tags on the bottom left side, and I normally cut those out. The tag on the top collar is a bonded sticker type of thing and it never irritates me. I’ve seen it start to peel off a couple of my older shirts, after so many washings. There’s no Omni-Heat lining on the cuffs, so don’t rely on them to keep your hands very warm. I do use the thumb holes when I just need something over my hands very briefly, perhaps while holding a cup of coffee outdoors at a bus stop when I see the bus coming and remove my gloves to get my fare card ready. On the back of the collar, the phrase “MAKE YOUR OWN HEAT” is printed right near the top. That doesn’t bug me at all, and it’s usually covered up anyway. But it’s something to be aware of if you’re not cool with people reading that on the nape of your neck. I’ve been a fan of these shirts for a few years now. They hold up great to lots of wear and washing. The only reason I buy replacements is my shrinking size: I give my now-too-big used tops away and buy the next size down for myself. I never want to spend a Chicago winter without at least 3 of these shirts in regular rotation.
Date published: 2018-01-16
Rated 3 out of 5 by from its snug i was wanting to wear this as a casual shirt so i found it too form fitting for my tastes. I bought a large a few years ago for curling but found it way too big. This time i ordered a medium and found it way too small. If i was only going to use it as a base layer it would have been fine. I returned it and unfortunately a larger size was not available. I loved color so i am hoping i see it again next year. (This review was collected as part of a promotion.)
Date published: 2018-01-12
Rated 5 out of 5 by from Does what it says :) I brought this specifically for a snowboarding trip on NYE for which the forecast was -7 + a crazy windchill. People thought I was nuts to go but this, along with the balaclava I bought for the same reason kept me really comfortable. With a fleece and my outer jacket I was able to play on he slopes all night. Very happy with this!
Date published: 2018-01-02
Rated 5 out of 5 by from Favorite base layer Fits perfect, does not ride up, I have long arms, the thumb holes fit perfectly, I have a long torso it goes over my pants, I stay warm working outdoors whether is a run or hike. Highly recommend to all my friends, this is my second base layer of this type.
Date published: 2018-01-01
Rated 5 out of 5 by from Favorite piece! The OmniHeat is great for cold weather running. I love the color too!!
Date published: 2017-12-26
Rated 4 out of 5 by from Love the omniheat The shirt is nice and will definitely keep you warmer than the same thing without the omniheat lining. It would be great if they had a petite line. The shirt is great for under a Work shirt when it gets cold but you don’t want the bulk of most shirts. I have purchased both the men’s and women’s to wear at my outdoor security job. My only complaint is that the arms are very tight even when I go up a size in both men’s and women’s.
Date published: 2017-12-08
Rated 5 out of 5 by from Omni Heat I swear by any product with Omni Heat I have shirts, hats,gloves and base layer undergarments that work wonders especially since I am outdoors majority of the day. Using your own body heat it keeps me warm even in less than ideal temperatures LOVE THEM
Date published: 2017-12-07
Rated 5 out of 5 by from Super warm! Every year I try to get at least 1-2 of these tops to replace cotton turtlenecks & other baselayers I have. I'm 5'4" with heels, not quite 100 lbs & am a 32B through the chest. I usually have problems getting tops that fit my torso to be long enough in the arms, but with Columbia, I never have that problem. I usually get a small in most tops from Columbia so I have a little give room. These keep me toasty, look good & are comfortable. I love the thumb holes! I wish everything had them. You don't have to worry about the sleeves bunching up when putting on another layer, & when your hands start to get chilly, just pull the sleeve over your hand & thumbs without the need for gloves. When it gets colder, use the thumb holes to keep the wind out when you put on your Columbia gloves! No one notices that they are baselayers. I only wish they came in more colors. The Omni-Heat really makes a huge difference in how warm the clothing is! This is an amazing product! It keeps you warm but not too warm. It's thin but not too thin. You can regulate the temperature by the zipper. I have no problems wearing these inside either. None of my Columbia gear had worn out, & I've had my first jacket for well over 6 years!
Date published: 2017-11-30
Rated 5 out of 5 by from Fits well I haven’t had a chance to really test the warmth, although when I was trying this on in my apartment I did get pretty toasty. I bought a medium, I am 5’9”, 34 DD, 150 pounds and it fit perfectly.
Date published: 2017-10-27
Rated 5 out of 5 by from so great the best base layer keeps you toasty!!!
Date published: 2017-02-12
Rated 3 out of 5 by from A little disappointed :-( I read online that this baselayer ran a little small, so I looked at the size chart and ordered a size large. It's much too large. Worse, I was expecting it to keep me toasty while skiing, and it doesn't. Not toasty. Not warm. No better than my much less expensive baselayer that I was wearing before. So, although the quality of the construction and the look are lovely, I'm disappointed that it doesn't fit as I was led to believe and certainly doesn't deliver in terms of the warmth I was expecting.
Date published: 2017-02-08
Rated 2 out of 5 by from Product is too tight This base layer is too small and tight. I had to return it. The quality looked good. I guess Ill have to get 2 sizes bigger.
Date published: 2017-01-23
Rated 5 out of 5 by from Great cold weather baselayer I liked this so much, I bought another right away. I can wear just this with a soft shell jacket on a 20 degree day and be perfectly comfortable on my walk. I'm 5'6", size 6 with broad shoulders and long arms. The medium was just right for me.
Date published: 2017-01-13
Rated 4 out of 5 by from it's true to size. I read the review and bought one size up. But it's then too large for me. PUt it here to remind the later buyers.
Date published: 2017-01-04
Rated 5 out of 5 by from A little small, but assume it will stretch. I have an older version of small, and this is cut a little tighter, esp the sleeves and underarms. The fabric is ribbed and very strong, but I assume garment will relax with time. Love purple color. If you're not quite a "true" size, consider going a size up. Runs a little small= did not return it.
Date published: 2017-01-03
Rated 5 out of 5 by from Comfortable base layer top This top is a great baselayer, super comfy and warm. This runs very true to size for me. I am 5'6", 130lbs and am always in the small size range. All the reviews stated this item ran very small and to order up a size so I got a medium first, it was huge!! Billowing sleeves and super baggy in the body. I exchanged for a small and it's perfect. It could even be a bit more form hugging around the mid section as these type of tops are supposed to be almost a compression fit, but I think that will give it room to layer over a sport tank. I haven't tested it in cold conditions yet but am headed to Zion next week for New Years and will get lots of use out of it there. Should be perfect!
Date published: 2016-12-21
Rated 5 out of 5 by from Love it! Fits perfect, perfect under layer to keep you warm!
Date published: 2016-12-19
Rated 2 out of 5 by from Very tight fit I just bought a size S hoodie at a Columbia store and it is loose on me. I bought a pair of M base layer bottoms which fit fine and thought I could grab the M top. When I got home I realized I hadn't tried the top on, which turns out was a huge mistake. I'm surprised by how all over the place Columbia's sizing is; at least when I was at the store I was able to easily grab another size when predicted sizes didn't fit (a pair of leggings that would have been S in another brand I had to get in L, e.g.). I am about to head somewhere very cold and unfortunately the Columbia store is an hour drive away, so I guess I will just have to do without a thermal top. I'm usually a size S or M in shirts, but I would call this more of an XS. It's very tight across the bust and uncomfortably tight over my arms. There is little give to the fabric. I wish I could try on a L and XL but unfortunately it's too late. Columbia makes great gear but I've learned the lesson that you *have to* try it on first due to their unpredictable sizing. It's strange that I'd fit most comfortably in an XS hoodie and XL thermal top.
Date published: 2016-11-20
Rated 4 out of 5 by from Not what I needed I did not realize this was a bottom layer for outdoor sports and what I needed was a top to wear with or without a vest. The fit of the medium for my 5'4" 36C was too snug for my purpose but but would have been fine as an undergarment for skiing or hiking. The length was long, but would have stayed tucked in nicely and I love having thumb holes in tops to keep my hands warmer in cold weather.
Date published: 2016-05-28
Rated 4 out of 5 by from Happy with Heavyweight II In my opinion, this Heavyweight II layer has/can: - a nice deep purple colour (is consistent as shown in the product image) - provide enough warmth for doing your favourite snowsports/activity in places at slightly higher elevation (e.g., snowboarding/skiing in the cold Whistler weather) - (XS heavyweight) more room, and not as skin-hugging, compared to the XS mid-weight long-sleeve which I bought two years ago. Though, I prefer the omni-heat side closer to my skin like the mid-weight...this heavyweight isn't baggy nor too loose either. This is still a staple piece which I would recommend to most.
Date published: 2016-04-04
Rated 3 out of 5 by from Warm I have the purple. It is a beautiful color. The sizing is very small. I usually wear a small and buy a medium when I want it looser. The medium is very snug. It snags easily. The velcro on my ski jacket snagged up the sleeve near the thumb holes.
Date published: 2016-03-20
Rated 4 out of 5 by from Feels Tight in Sleeves I really like Columbia products, however, as in previous reviews, I have to say that their tops consistently run small. I'm 5' and have a 36DD chest. It seems like Columbia creates tops to fit tall, skinny ladies so as a lady who is short, curvy and isn't very "lean" I have to order XL tops to fit my chest but then the sleeves and length are long. The extra length doesn't bother me as it helps keep the top tucked in but the sleeves bunch under a jacket. The sleeves also feel tight in the lower arm. The performance of the top is good. I stayed warm during a cold, windy snowshoe hike. I'm a big fan of the Omni Heat products. It wasn't quite as wicking as I'd like but it could have been due to other layers I was wearing over the base layer. The dog jumped up on me and snagged the material but by the nature of the fabric I don't think that could be helped. The Inkling color is very nice and I received a lot of compliments on it.
Date published: 2016-02-21
Rated 5 out of 5 by from Runs small!! I wear an XS in everything at Columbia. Ordered this knowing it might be a bit more snug, but it was very small! (I'm 5-1, 115, curvy build). Had to send it back, there was no way!!
Date published: 2016-01-12
Rated 2 out of 5 by from Not what I expected Very thin. Definitely not heavyweight material. Concerned it will not keep me warm as a base layer. Would not recommend.
Date published: 2016-01-07
Rated 5 out of 5 by from How to stay warm This is the best product I have tried in the winter. I can finally stay warm in the cold mornings feeding all the horses.
Date published: 2016-01-02
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Size & Fit Guide

Size Chart

Size & Fit Guide
Women's Body Measurement (Inches)
Size XS
Bust 32-33 34-35 36-37.5 39-40.5 42-44.5
Waist 25.5-26.5 27.5-28.5 29.5-30.5 32-33.5 35.5-37.5
Hips 34.5-35.5 36.5-37.5 38.5-40 41.5-43 45-47
Size L
Bust 39-40.5 42-44.5
Waist 32-33.5 35.5-37.5
Hips 41.5-43 45-47
How to Measure
Womens size chart measurement guide
  • 1. Chest/Bust: Measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.
  • 2. Waist: Measure around the natural waistline, allowing the tape measure to sit comfortably.
  • 3. Hips: Measure around the fullest part of your hips.
  • 4. Sleeves: Start at the center back of your neck and measure across the shoulder and down to the wrist. Round up to the next even number.
  • 5. Inseam: Measure from the top of the interior leg to the bottom of the ankle.
Women's Fit Guide
Body contouring fit conforms to movement.
womens performance fit top
Body skimming fit with end-use mobility in mind.
womens active fit top
Modern Classic / Regular
Universal, easy fit for comfortable range of motion.
womens modern classic fit top
Most generous fit for a full spectrum of movement.
womens relaxed fit top

How to Measure

Columbia Fit Guide

How to Measure

  • Fold up at dotted line.
  • Place against a wall or other 90 degree surface.

    Place heel against fold/wall on flat level surface.
  • Mark the end of the longest toe with a pen or pencil.
  • Measure both feet and use the larger measurement.
  • Read measurement and compare to size chart.
  • When comparing on the size chart, determine the closest larger measurement and use that number to determine your shoe size for your country’s shoe measurement standard.

Shipping & Returns

Shipping & Returns

Shipping Information

Shipping Method Rate Expected Delivery Time
Ground $6.00 3-7 Business Days
2-Day Air $12.00 2-3 Business Days
Overnight $19.00 1-2 Business Days
Free Standard Shipping

Return Policy

Returns are accepted within 60 days of the purchase date online or in-store. Your apparel must be in original and unworn condition, with tags still attached. Footwear returns must also include the original box.

Still Have Questions

See our Customer Service section for more details. Visit Customer Service

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