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Smartwool Men's Merino 150 Long Sleeve Baselayer

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Smartwool's Merino 150 Long Sleeve Baselayer is designed for year-round use thanks to the thermoregulating, anti-odor properties of Merino Wool -- wear it as a single layer on a cool summer night or layer it in the winter for more warmth. This versatile baselayer is Core Spun, wrapped around a nylon core, for added durability that doesn't compromise comfort. Smooth flatlock seams and the offset shoulder help minimize chafing and irritation.

Features & Specs:

  • Core Spun Merino 150.
  • Light, quick-drying, durable.
  • Slim fit with raglan sleeves.
  • Flatlock seams.
  • Weight: 170g.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Black - Small

Mfg PartNum: SW016042001-S 

Black - Medium

Mfg PartNum: SW016042001-M 

Black - Large

Mfg PartNum: SW016042001-L 

Black - X-Large

Mfg PartNum: SW016042001-XL 

Black - 2X-Large

Mfg PartNum: SW016042001-2XL 

Light Gray Heather - Small

Mfg PartNum: SW016042545 

Light Gray Heather - Medium

Mfg PartNum: SW016042545 

Light Gray Heather - Large

Mfg PartNum: SW016042545 

Light Gray Heather - X-Large

Mfg PartNum: SW016042545 

Light Gray Heather - 2X-Large

Mfg PartNum: SW016042545 

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Reviewed 4/13/2020
by Merlin
Cycling Enthusiast
Portland, OR
Value Rating
Overall Rating
Works very well at protection and comfort.

I wore this under a long sleeve during cold weather. I was a great base layer and I would not hesitate to get another if I needed one. My cycling buddy always raves about wool and now I know why!

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Reviewed 4/6/2020
by Anonymous
Seattle Area
Overall Rating
Merino Wool Delight

While technically this is a base layer, I wear this as a top. It is comfortable and just the right thickness to take the cool edge off.

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