Our Ultralight 100% Merino Wool T-Shirt is designed for athletes with a fitted torso, drop hem seam, and natural 4-way stretch for unrestricted movement.
Stay cool, dry, and fresh all day superfine 17.5-micron merino naturally regulates temperature, eliminates odor, and wicks moisture for all-day freshness and a soft, light feel.
Fabric & Specs
- 100% superfine merino wool - 17.5 micron
- Ultralight 140 GSM warm-weather jersey fabric
- Solid colors: Dusk, Forrest Moss, Sea Mist
- Natural 4-way stretch
- Moisture-wicking, odor-resistant, temperature-regulating
Fit
- Athletic fit with fitted torso
- Drop hem seam - stays put while you move
Best For
- Trail running, hiking, mountain biking, travel, and everyday wear
Women's Ultralight Merino Wool T-Shirt
Bundle & Save: buy 2, save 10% · buy 3, save 15% · buy 4+, save 20%. Mix sizes, colors, men's and women's — applied automatically at checkout.
Our Ultralight 100% Merino Wool T-Shirt is designed for athletes with a fitted torso, drop hem seam, and natural 4-way stretch for unrestricted movement.
Stay cool, dry, and fresh all day superfine 17.5-micron merino naturally regulates temperature, eliminates odor, and wicks moisture for all-day freshness and a soft, light feel.
Fabric & Specs
- 100% superfine merino wool - 17.5 micron
- Ultralight 140 GSM warm-weather jersey fabric
- Solid colors: Dusk, Forrest Moss, Sea Mist
- Natural 4-way stretch
- Moisture-wicking, odor-resistant, temperature-regulating
Fit
- Athletic fit with fitted torso
- Drop hem seam - stays put while you move
Best For
- Trail running, hiking, mountain biking, travel, and everyday wear
Frequently asked questions
Does merino wool smell after sweating?
No — merino wool naturally resists odor. The fiber binds odor-causing bacteria and releases them in the wash, so you can wear a Wülf Wool shirt for multiple days of activity between washes. Many merino wearers go 3–5 wears before washing, even after sweating.
Is 140 GSM merino too hot for summer?
No — 140 GSM is an ultralight fabric weight, at the lightest end of merino jerseys (most merino shirts run 150–200 GSM). The 17.5-micron superfine fibers wick moisture and regulate temperature, so it wears cooler than cotton in the heat. It's built specifically for warm-weather hiking, trail running, and mountain biking.
How often do I need to wash it?
Far less than a synthetic or cotton shirt. Because merino resists odor and wicks moisture, airing the shirt out overnight is usually enough between wears. Wash it when it's visibly dirty — typically every 3–5 wears rather than after every use.
How do I wash merino wool?
Machine wash cold on gentle with mild detergent, then lay flat to dry. Avoid fabric softener, bleach, and high-heat drying, which damage the fiber. Drying on low heat or until damp works when necessary, but isn't recommended regularly.
Is this 100% merino wool or a blend?
100% superfine merino wool — 17.5-micron fiber, no synthetic core or polyester blend. The natural 4-way stretch comes from the knit, not elastane.
How does it fit?
Athletic fit with fitted sleeves and a lengthened torso with a drop hem, cut to stay put during movement. It fits true to size. If you're between sizes, size up.
