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$120.00
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$120.00
Setting the standard for all others to follow, the 200 Oasis Long Sleeve Crew is icebreaker's best-selling base layer—a versatile active top for year-round layering and everyday comfort.
Good for:
100% Merino Wool ; Exclusive of decoration
Machine Wash Cold, Gentle Cycle. Wash With Like Colors. Do Not Use Softener. Do Not Bleach. Do Not Tumble Dry. Line Dry In Shade. Cool Iron. Do Not Dry Clean.
Key product measurements
Back High Point Shoulder to Hem: 71.5cm (Based on size M)
Fit
Slim
Overall rating: 4.766355 / 5 from 107 reviews.
This base layer is highly regarded for its exceptional quality, comfort, and versatility. Customers praise its lightweight nature and suitability for cold weather activities. The fit and material are also highlighted as key strengths, though opinions on sizing and smell vary.
Review topics: ["size","fit","weight","problem","quality","looks","feel","value","material","layer","sleeves","works","wear","top","arms","colour","base layer","shirt","wool","smell","properties","clothing","stink","wicking","buy","care","neckline","activities","icebreaker","use"].
"This shirt is warm and breathes well and is the perfect shirt to wear to sleep. It doesn't stink like synthetics that don't breath or cotton that soaks up sweat and takes too long to dry. I live at 7,400 feet and this shirt is the perfect weight 10 months out of the year."
— AE F. (5/5)
"Absolutely love it! The best base layer by far. Used the previous iteration bought about 8-9 years ago for hiking, skiing, flyfishing in cold climates - northern Canada in October. Zero sweat accumulation or odor after 5 -7 consecutive days of wearing in the backcountry. Decided only one is not enough and I liked this color so I bought two more (and the respective long johns)"
— Ash (5/5)
"The reason I like the 200 weight merino wool is because the mosquitoes can’t bite through the fabric. I walk my dog 4 or 5 nights a week at Lake Marie (elevation 10,500 feet) in the Snowy Range in Wyoming. The temperature is usually about 60 degrees F. There are thousands of mosquitoes around the lake trail, but I don’t get bit because of the thickness of the wool fabric."
— E W. (5/5)
"Perfect for. 2nd identical one I purchased."
— Khurram S. (5/5)
"Great product. Comfortable and will perform well as a merino base layer (sweat mitigation anti stink etc). However it’s definitely only a base layer. The neck is cut very wide and doesn’t sit like a causal t shirt. The length of the torso is short as well. Slim fit is fine as again this isn’t a casual/baselayer combo…just a baselayer. Their 150 tech tee is perfect for everyday wool wear so I am going to invest more in those than this product as wool base layers have a very specific use case."
— Anonymous (4/5)
"I wear this layer other than hot days of summer. I pair it with a wool hoodie on cool days. I work in it I hunt a lot in it. Ski in it all winter. Breathes really well while still holding heat. Doesn’t hold odor. First time buying this product and will buy again."
— Anonymous (5/5)
"As expected this merino wool is super comfortable. The fit is just right and insulation value is perfect (not too warm or too cool)."
— Anonymous (5/5)
"I'm a medium in most clothing. 5ft 11in and about 160-165lbs. This shirt is far too short in sleeves for anything active and the body was a bit short as well. The chest and stomach sizing was spot on so I wouldn't want to size up. Build quality looked good and the material thickness was just what I wanted. Overall I'm disappointed. For someone 5'8/9 ish this would be great"
— Anonymous (2/5)
"Shirt is true to size. Comfortable and super warm. Used snowboarding and camping. Slightly scratchy if you aren’t used to wool but easily forgotten in a few minutes."
— Anonymous (4/5)
"I use this base layer almost daily here in the PNW where the fall through spring are cool and wet. Doesn’t retain body odor and maintains comfort and insulation with regular washing."
— Anonymous (5/5)
Find the size that fits you best based on people just like you.
Use the chart below to determine your size. If you’re between two sizes, order the smaller size for a tighter fit or the larger size for a looser fit. If your measurements for chest and waist correspond to two different sizes, order the size indicated by your chest measurement for tops and your hip measurement for pants.
| XS | S | M | L | XL | XXL | XXXL | |
|---|---|---|---|---|---|---|---|
| Neck | 12-13 | 13-14 | 14-15 | 15-16 | 16-17 | 17-18 | 18-19 |
| Chest | 33-35 | 35-37 | 37-40 | 40-43 | 43-46.5 | 46.5-49.5 | 49.5-52 |
| Arm length | 33.5 | 33.5-34 | 34 | 34-34.5 | 34.5 | 34.5-35 | 35-35.5 |
| XS | S | M | L | XL | XXL | XXXL | |
|---|---|---|---|---|---|---|---|
| Neck | 32-34 | 34-36 | 36-38 | 38-41 | 41-43 | 43-46 | 46-49 |
| Chest | 84-89 | 89-94 | 94-102 | 102-110 | 110-118 | 118-126 | 126-134 |
|
Arm length |
85-85.5 | 85.5-86 | 86-86.5 | 86.5-87 | 87-88 | 88-89 | 89-90 |
Our three different fits - slim, regular, and relaxed - ensure that when worn together, layers move and breathe like a single garment.
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