Our Ultralight 100% Merino Wool Long Sleeve Shirt is designed for athletes with a fitted torso, drop hem seam, fitted sleeves, 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 sleeves and 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 Long Sleeve 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 Long Sleeve Shirt is designed for athletes with a fitted torso, drop hem seam, fitted sleeves, 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 sleeves and 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.
Is a long sleeve too warm for summer?
At 140 GSM, the long sleeve is light enough for sun protection without overheating. The extra coverage is for UV and brush, not warmth. It regulates temperature the same way the tee does.
