Where to Buy

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Retailers' Descriptions

Here's what other sites are saying:

CLOSEOUTS . Not your average shirt, I/O Bio Merino's Signature shirt is made with 100% merino wool, a delightfully soft, performance-oriented fabric that will blow your cotton tees into the back of the closet. Available Colors: SLATE, NAVY, BRICK. Sizes: S, M, L, XL, 2XL.

- Sierra Trading Post refers to the men's version

The best way to view the fall color is by putting on the I/O Bio Merino Signature Long-Sleeve Crew, slinging a pack over your shoulder, and heading out into the forested wilderness. There, you can surround yourself in the rich reds, yellows, and oranges while the Signature crew insulates you in the morning, and wicks your sweat in the afternoon. The flat shoulder seams help as wellespecially when you've lugged your pack over ten miles of trail .

- Backcountry.com refers to the men's version