Icebreaker Merino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's

View the 134 reviews with an average rating of 4.7 out of 5 stars

$105.00

The men's Icebreaker Merino 200 Oasis Long-Sleeve Crewe Thermal top has carefully offset shoulder seams to ensure you won't feel irritation from heavy pack straps during your cold-weather adventures.

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Soft 100% merino fibers regulate body temperature in all weather conditions and resist odors
Design features underarm gussets and set-in sleeves for added mobility
Offset shoulder seams and flatlock stitching throughout prevent chafing
Droptail hem gives you added coverage
Center-back length: 29 in. measured on a size L
Icebreaker tonal embroidered logo
Icebreaker will replace your garment within 1 year of purchase if it has been damaged by faulty fabric, stitching or manufacturing; see Icebreaker website for details

Imported.

View all Icebreaker Men's Base Layer Tops

Best Use	Snowsports
Shirt Type	T-shirt
Fabric	Merino wool
Sun-Protective Fabric	Yes
UPF Rating	20
Moisture Wicking	Yes
Quick Drying	Yes
Underwear Weight	Midweight
Sleeve Length	Long Sleeve
Gender	Men's
Sustainability	Contains ZQ merino wool

Icebreaker Clothing - Men's

	S	M	L	XL	XXL	XXXL
Chest	33-36	36-39	39-42	42-45	45-48	48-52
Waist	27-30	30-33	33-36	36-39	39-42	42-46
Hip	34.5-37	37-39.5	39.5-42	42-44.5	44.5-47	47-50.5

Sizing Notes

Measurements are stated in inches unless otherwise indicated.

CHOOSING THE RIGHT SIZE: If your body measurements are midway between two sizes, select the smaller size for a tighter fit or the larger size for a looser fit. If your body measurements result in different sizes, we recommend using your chest measurement for tops and your hip measurement for pants.

How to Choose Base Layers

What material is best?

Wool is moisture-wicking and odor-resistant, while synthetic fabrics are more durable and less expensive.

Match the temp to the trek

Lightweight layers are best for moderate to cool temperatures. Midweight layers are best for cold temperatures. Heavyweight layers are best for below-freezing temperatures.

Find your fit

To be able to wick sweat efficiently, your next-to-skin layer needs to actually be next to your skin. A comfortably snug fit everywhere is your goal.

More expert advice

What to Wear Hiking

Layering Basics

Close up of someone that has fallen in the snow and is laughing about it.

How to Choose Insulated Outerwear

Ratings Snapshot

Product Rating

4.7

View the reviews with an average rating of 4.7 out of 5 stars134 Reviews

69 out of 75 (92%) reviewers recommend this product

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Average Customer Ratings

Overall Fit Rating

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Most Helpful Favorable Review

5 reviews with an average rating of 5.0 out of 5 stars

almost magic travel

GreyBeard

7 months ago

If you want to travel light in cool weather this is almost magic. You can go 2 to 3 more day without washing than any shirt. Amazing body warmth management: warm when you need it but cool enough when you don't. This was the most important item a 10 day Scotland in April with one small backpack 17x12x8.

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GreyBeard

Oban, Scotland

12 people found this review helpful

Most Helpful Critical Review

5 reviews with an average rating of 3.0 out of 5 stars

Rises up way past waist when I raise hands

Jeff

4 years ago

The fabric feels amazingly soft. It was very form fitting and I was excited that it was worth paying the extra for until I realized every time I reached up the air it completely rose up to my belly button. It felt like it had already been shrunk in the dryer or something. The shirt was tight and form fitting in most places but down by my waist it wasn’t long enough or snug enough to stay in place. Someone else had a similar complaint. I buy arcteryx gear because they fit so well even though they’re expensive. But I’ve learned not to settle. I got this on a closeout and still will be returning.

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Jeff

Los Angeles

7 people found this review helpful

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GreyBeard

Oban, Scotland

Rated 5.0 out of 5 stars

7 months ago

Height:6'2"

Weight:150–175 lbs.

Yes , I recommend this product

Helpful?

Mark at Ski Patrol

Ontario, Canada

Rated 5.0 out of 5 stars

6 years ago

Just arrived! The Icebreaker Oasis top and bottom are great. Perfect fit, high quality and keeps the cold at bay. As a ski patroller, I’m out all day and Icebreaker keeps me comfortable. Tip - order you normal clothing size (seems obvious) and you will love the perfect fit!

Yes , I recommend this product

Helpful?

Jeff

Los Angeles

Rated 3.0 out of 5 stars

4 years ago

Height:5'10"

Age:35–44

Weight:175–200 lbs.

No, I do not recommend this product

Overall Fit Rating

Runs SmallRuns Large

Helpful?

Souper Dooper

Rated 5.0 out of 5 stars

3 months ago

[This review was collected as part of a promotion.] Woman here, I bought a men's size small because I was shopping clearance and didn't love the remaining women's colors left in stock. This men's long sleeve fits me nicely, a little loose but in a comfy way. My go-to merino camp shirt (different brand) developed so many mini holes and darned patches I was looking for a replacement for when I don't want to look so scrappy. This icebreaker shirt is soft, cozy, quick drying and overall great so far. We'll see how it holds up to years of abuse backpacking. If I had one complaint at this point, the tags on the hip are ridiculously long, I don't see why anyone wouldn't cut them off.

Yes , I recommend this product

Originally posted on icebreaker.com

Detroit, MI

Rated 5.0 out of 5 stars

7 months ago

[This review was collected as part of a promotion.] We just moved from Cali to Mich and bought a beautiful historic home... But it's drafty in our old home and our bodies aren't acclimated to "the seasons" yet so we wear these under our shirts pretty much all week and even when we go out! They wash in the washer nicely and they air dry quickly. They're wool so they don't get smelly. And even though they're wool, the shirts do not itch much (an occasional itch in the middle of the back but nothing bad all and honestly could be from the dryness). They fit well (and true) and layer under nicely. It really does warm us up! We're women but wanted the more relaxed fit of a mens shirt. We even bought the leggings for ourselves (got womens pants tho).

Yes , I recommend this product

Originally posted on icebreaker.com

Future

North MS

Rated 4.0 out of 5 stars

1 year ago

Found this on sale and ordered my regular size and it fits like a body forming layer. I ordered a size up and it seemed a better fit for my needs. Quality fabric but the collar feels stretchy some what. The length of the shirt is longer than some if that's what you like, but I'm not trying to warm my butt. Some people may have a longer trunk type body or tuck their shirt. Sleeves plenty long. Its lightweight. I'm keeping the 200 top and will see its long term use but the 260 weight I sent back because I felt the lighter base layer worked for me as I could layer to get better results with more versatility for my climate. The fabric is plush and you may wear this as a everyday top used as casual wear on cold days. The fabric is that nice.

Age:65–74

Weight:175–200 lbs.

Height:5'8"

Yes , I recommend this product

Overall Fit Rating

Runs SmallRuns Large

Helpful?

VT wool seaker

Vermont

Rated 3.0 out of 5 stars

4 months ago

While this version was soft and warm, a seam along the side is already coming unraveled after two light wears and one hand wash. Not the quality I expect for the company or the price. Bought on sale, so I can't return it.

No, I do not recommend this product

Originally posted on icebreaker.com

fosterdogs

Rated 5.0 out of 5 stars

1 year ago

I have a few of these in different weights, all in black. They are not "soft" but really warm for the thickness and weight. For some reason, this weird Geo Blue color is much softer than black. I bought XL size on sale (one-third normal price) to layer up. I wish my size was in stock for this sale. These are really nice.

Yes , I recommend this product

Helpful?

Martin Zumsteg

Jackson, NJ

Rated 4.0 out of 5 stars

3 weeks ago

I have only used this once so far, on a 4-day Presidential Traverse in the White Mountains. Up to this point I have used purely synthetic (polyester) base layers and have definitely noticed the "stink" factor. This was definitely an improvement in that respect. I only gave it 4 stars because I haven't used it enough to see what kind of longevity it will have and how it will stand up to abrasion. But so far, so good. Temps were rather high for this trip and I also would like to know if it will prove to be significantly warmer than what I've used previously.

Helpful?

Steve

Rated 4.0 out of 5 stars

2 years ago

Good odor control and fit/stretch, but still itchy, even for 200 merino. Maybe I'm just not a wool kind of guy.

Helpful?

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Icebreaker Merino 200 Oasis Long-Sleeve Crewe Thermal Top - Men's

This purchase pays for membership!

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Sizing Notes