Icebreaker Men's Oasis LS Crewe
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Icebreaker Men's Oasis LS Crewe

Icebreaker Men's Oasis LS Crewe is rated 4.9 out of 5 by 14.
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4.9 Star Rating

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Product Description Item No.   10223646

The Icebreaker Men's Oasis LS Crewe is a slim fit base layer for hiking, skiing, snowshoeing, and even heading to work. The Oasis LS is 200 weight, lightweight enough for running on a mild day worn alone and warm enough for starting the pile of layers on frigid days. The 100% merino wool helps regulate your body temperature by wicking sweat and staying breathable. It's even naturally odor resistant so you can wear it for mile after mile. Life is way more fun outdoors, spend it in an Oasis.

Products on Sale are Discontinued Styles or Colors.

FEATURES of the Icebreaker Men's Oasis Long Sleeve Crewe

  • Lightweight
  • Naturally odor-resistant
  • Breathable
  • Offset shoulder seams to prevent pack rub
  • Anti-chafe seams for comfort
  • Drop-tail hem for added coverage

- + Product Specifications
Fabric Weight: 5.9 oz / Square Yard
Fabric Details: 100% Merina Wool
Weight: 7.05 oz
Disclaimer: We only ship this brand to US Addresses.
Clothing Fabric: Merino Wool
Gender: Mens
Features: Insulated, Packable, Sun Protective, Merino Wool
Best Use: Travel, Hiking, Snowsports, Outdoor Work and Tactical, Backpacking, Casual
Fit Type: Slim Fit
Sleeve Length: Long Sleeve
Shirt Style: Crew
Rated 5 out of 5 by from The Ultimate Go-Anywhere Baselayer I love all of my baselayers from Icebreaker, but if I could only have one, it would be the Oasis Crewe. The Anatomica and Sprint lines are fantastic for specific activities, but this is my daily go-to. It fits fine under other shirts (including dress shirts), but unlike the Anatomica, which is very thin, and the Sprint, which is 100% form-fitting, I can wear this standalone while running errands and such without feeling like I'm in a sheer top or a wetsuit. Although I'd pick my Sprint for high-activity sports and the Anatomica for warmer ultralight excursions, I'd be fine with taking the Oasis. The sleeves are just a tiny bit short on my very long arms, but compared to how most shirts fit, I can't complain too much.
Date published: 2014-12-24
Rated 5 out of 5 by from Great heavier baselayer for those colder winter days (and nights) I purchased this baselayer at the same time as the anatomica one. This version is a bit heavier in weight, as a wanted it - for the colder winter days here in Michigan and for snowboarding. This shirt could keep me warm if just worn with one of my Arc'teryx shells down to 0F, no doubt about it. If you're looking for a baselayer of a bit heavier weight - look no further! I highly recommend this one. I'm 6'2" and 175lbs and chose the large because I like my baselayers to be close-fit, but not skin tight. I could have fit into the medium with no problem, but I like a bit of wiggle room.
Date published: 2014-10-31
Rated 5 out of 5 by from Lightweight and warm! When I first opened the package, I was amazed at the lightweight of this base layer! In trying it on, the merino wool was soft, not scratchy, and well-fitting. I wore it with a shell on a cold day to cut some large tree limbs that had come down in an ice storm. The icebreaker performed like a pro (no pun intended)! I was very comfortable in the cold, snowy landscape and not too warm with the hard work. I look forward to trying it X-C skiing. Highly recommend this product!
Date published: 2014-12-29
Rated 5 out of 5 by from Break the cold Ice! This LS Crewe by Icebreaker is one of a kind. Yes there are lots of long sleeve shirts, thermals and "Dri-fit" shirts out there, but this Oasis is set apart. Feel the difference and buy this shirt.
Date published: 2013-12-10
Rated 5 out of 5 by from amazing material I took this crew with me on a 20 mile section of the AT. The weather was in the 50s, so I didn't need it for warmth on this day. I started the first few miles with a C9 from Target, which I have used to run in. The C9's purpose was to wick moisture from my body, which it did for a while. After removing this top, I replaced it with the ice breaker top. To my surprise, my back remained warm and dry, even though the back of my backpack was not covered in cold, clammy sweat from the other top. Not only this, but the last 10 miles I hiked in a foggy mist atop a mountain. While my pack remained soaked, I was dry. The garment didn't smell after using, as the rest of me did. It is a very soft material, which wicks away moisture, while somehow keeping you warm AND dry. This will be a staple in my pack and I will be buying more. BUY THIS PRODUCT!
Date published: 2017-01-26
Rated 5 out of 5 by from Excellent I have this and love it. I have the 260 weight and it is also fantastic. This 200 weight I sometimes wear under a dress shirt in the winter and I couldn't be happier with it. It breathes, wicks, doesn't stink, and looks excellent. I will most certainly purchase more. I am 5'8" and 155lbs and wear the medium, and it is not skin tight, which is what I want and it fits like in the photo. To get skin tight, I'd likely need a small.
Date published: 2014-02-13
Rated 5 out of 5 by from Light weight, super warm and moisture management This shirt is perfect for the time of year. In PA recently the temperature has been fluctuating from around 45 degrees by 6am to the around the low 80's by 3pm. The merino wool is great at heat and moisture management. I own a few other merino base-layers and I'm sure this one will be great as a base in the dead of winter up till late spring. Love it.
Date published: 2015-10-02
Rated 5 out of 5 by from Super soft and a perfect fit This is a great base layer. I'm 6'1'' and 180lbs and a large is a perfect fit. This shirt is extremely soft and perfect for under a fleece. I like to wear merino and this is my first piece from Icebreaker and I will definitely be buying more! Next time I'll try a 260 weight though.
Date published: 2014-11-18
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How to clean and dry ?????

Asked by: mike
Hiya Mike, thanks for your question! You can machine wash it, warm, with like colors. Do not use softeners, do not bleach. Line dry in the shade, do not tumble dry. Warm iron, do not iron labels. Do not dry clean. Hope this helps!
Answered by: Alice in Wanderland
Date published: 2017-01-23
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- + Size Guide

Men's Clothing and Outerwear
SIZE Small Medium Large X-Large XX-Large
Chest 35 3/4" 38 3/4" 42" 45" 48 1/4"
Waist 30 1/2" 33 1/4" 36" 38 3/4" 41 1/2"
Hip 37" 39 1/2" 42" 44 1/2" 47"
Height 5' 10" 5' 10 3/4" 5' 11 1/2" 6' 0 1/4" 6' 1"
Woven Bottoms 28 - 30 32 - 34 36 38 - 40 -

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

• If your body measurements are midway between two sizes, go to the smaller size for a tighter fit or the larger size for a looser fit.

• If your body measurements result in different sizes, Icebreaker recommends using your chest measurement for tops and your hip measurement for pants.


Chest - Place the measuring tape around the fullest part of your chest.

Waist - Place the measuring tape at your natural waist, which is the narrowest point on your torso.

Hips - Place the measuring tape around the fullest point on your hips.


Slim Fit - A snug, close-to-the-body fit for low-bulk layering.

Regular Fit - A fit that is neither snug nor loose. Garments with this fit can be worn solo or over other layers.

Relaxed Fit - Loose-fitting lightweight layers. Ideal for more casual use.

* You can find the fit info for Icebreaker styles in the product description features and specifications.

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