Not all fleece are created equal.

Your Icebreaker Men's Sierra Fleece Jacket isn't any old fleece; it's made from 100% merino wool that's brushed for super-softness and does what only merino wool can. This wonder wool breathes to prevent overheating or clamminess, insulates for warmth, and feels soft and lightweight. It resists odors, too. And it's all natural. What other fleece can make that claim? This jacket features an internal storm flap for added protection against drafts and a secure zippered chest pocket with media port for your musical pleasure. 

  • Midweight merino wool jersey
  • Regular fit with full zip
  • Internal storm flap
  • Set-in sleeves
  • Chest with media port and two hand zippered pockets

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Icebreaker Sierra Fleece Jacket - Men's

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Here's what others have to say...

3 5

oddly tight fit in arms, roomy in body

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small

I'm 6'3" & about 205 lbs. I bought the XL in blue. Normally XL-sized Icebreaker fits me very well. This jacket runs small across my shoulders and is very tight down my upper arms. It fits like a fitted t-shirt, no kidding. And I have pretty skinny arms. The rest of it is actually more roomy than I'd like. I just don't get this one, unfortunately. I have many, many pieces of Icebreaker clothing, and this one is just a weird fit.
Material quality is great, though. I like how they're trying new fabric styles.
It would have been great for me if it better.

5 5

My go-to layer

  • Familiarity: I've put it through the wringer
  • Fit: True to size

I have two of these, one in Grey and Blue. These are just amazing. The fit is really nice, not too snug but still athletic. Really nice mid-weight layer that you can use for a lot of cool days. When active I normally will go down to this with just a base layer underneath -- Keeps me perfectly warm, but has a nice wicking ability too.

The other thing that I love is that it really doesn't pick up the smell of sweat easily.

Bottom line extremely versatile and I highly recommend.