merino T-shirts
Photograph by Nigel Cox

Pull the Wool Over

With thin weaves and ultrafine fibers, merino beats the summer heat

merino T-shirts

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IN ONLY A FEW YEARS, silky merino wool has gained acceptance as a true performance fabric, standing alongside advanced synthetics in cold-weather mid- and base layers. And now it’s challenging cotton for space in your T-shirt drawer. Companies like New Zealand’s Icebreaker and Steamboat Springs, Colorado–based Smartwool have spun fabrics that apply wool’s natural breathability, wicking characteristics, and odor-fighting properties to featherweight summer styles. It’s an old idea that’s new again—up until the early eighties, Tour de France jerseys were made of wool. But unlike those scratchy tops of yore, today’s high-quality merino fibers, some married to more durable nylon, are one-fourth the width of a human hair—meaning no itchiness and smooth style. If it’s good enough for an Italian suit, it’s good enough for your undershirt.

Tee Up
Moto Tee (far right), 100 percent wool; $65;

QuT (far left), 100 percent wool; $79;

Sequence T (left), polyester and wool; $35;

Emissary (right), 100 percent wool; $80;

Superfine Elite T (not pictured), 100 percent wool; $89;

Interwool Mountain Versatile Tee (not pictured), wool-polyester-spandex composite; $55;