A Smartwool Hiking T-Shirt That Can Be Worn for 'Multiple Days Without Having to Wash It' Is on Sale for Under $50

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Synthetic workout clothes have one big problem: they hold onto odors. This can leave your workout shirt smelling like a middle school locker room even after a quick jog. Merino wool, on the other hand, is moisture-wicking, breathable, temperature-regulating, and naturally odor-resistant, and there's no brand doing it better than Smartwool. Thankfully, one of the brand's best shirts for hiking, running, and other outdoor activities recently went on sale ahead of warmer, sweat-inducing weather.

The Smartwool Active Ultralite Tech T-Shirt is now on sale at REI for $49—a 25% discount on the normally $65 shirt. It's earned over 40 five-star ratings from shoppers who use it for everything from heavy workouts and running to international travel and everyday wear. It's available in sizes small through 2XL and comes in your choice of black or blue.

Smartwool Active Ultralite Tech T-Shirt in Black, $49 (was $65) at REI

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The shirt is made from a blend of 53% Merino wool and 47% Tencel lyocell, a modal fabric made from tree pulp without the harmful chemicals used in rayon. This blended fabric feels lightweight and soft on the skin, with the added bonus of being more eco-friendly than petroleum-based fabrics like polyester. It has flatlock and offset shoulder seams that reduce chafing while you work out or wear a hiking pack. It also features a color-blocked design, giving it a sporty look, with reflective details for extra visibility for those who run at night.

Shoppers were impressed with the shirt’s ability to maintain a fresh feeling after wearing it, with one writing that it “wicks well and doesn't hold odors, even after a few days of backpacking.” Similarly, another shopper wrote, “I wore it multiple days without having to wash it!” Another shopper appreciated the shirt’s versatility, writing, “I wear this shirt all the time, whether I'm just sitting around the house, going for a walk or a run, or hanging out with friends at a restaurant or bar."

Smartwool Active Ultralite Tech T-Shirt in Twilight Blue, $49 (was $65) at REI

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Other shoppers praised its performance capabilities, with one calling it the “perfect workout shirt,” and another calling it “my new workout go-to.” They added that with typical workout shirts, “as soon as I get home or to the car, I have to change out of them,” but “this shirt I can wear all day, and the next and the next, without washing or getting the ick.”

Whether you’re a runner, a hiker, or you’re just looking for a breathable, moisture-wicking shirt, this Smartwool performance shirt has you covered. And, if you’re a frequent traveler, you can take comfort in packing a shirt that can, in a pinch, be worn multiple days in a row. Merino wool is notoriously pricey, but this deal drops it to $49—about what you would pay for a high-end synthetic workout shirt. This particular style is discontinued, so act fast while it’s still in stock.