REI Co-op Lightweight Base Layer Half-Zip Top - Men's

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First half-mile cold; next 3 miles sweaty; lunch break cold. Don't stress—the REI Co-op lightweight half-zip long-sleeve base layer wicks and breathes to keep you comfortable all day.

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REI Co-op Lightweight Base Layer Half-Zip Top - Men's

REI Co-op Lightweight Base Layer Half-Zip Top - Men's

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