Outdoor Research Alpine Onset Merino 150 Crew Top

What Our Gearhead® Experts Are Saying:

"The Alpine Onset Merino 150 Crew is my go-to base layer for everything from ski days to chilly hikes. Its blend of non-mulesed merino wool and synthetic fibers strikes the perfect balance between warmth, breathability, and durability. Plus, the flat seams and thumbholes are game-changers for all-day comfort and staying put under layers."

We trust the Outdoor Research Alpine Onset Merino 150 Crew to be our versatile foundation for high-output adventures. Its non-mulesed merino wool blend brings soft, breathable warmth while naturally managing moisture during peak effort. Whether skiing fresh lines or climbing alpine routes, the lightweight construction fits seamlessly into our layering system.

This top doesn’t just perform; it feels like a second skin. Raglan sleeves and thumbholes enhance mobility and layering ease, while the flat-seam design eliminates chafing. With UPF 30 for sun protection, we’re covered even when layers come off. Built for movement, comfort, and rugged reliability, it’s our essential companion for cold-weather pursuits.

, Lightweight, versatile base layer for skiing, hiking, and climbing, Merino wool blend wicks moisture, resists odors, and stretches with ease, Non-mulesed wool offers ethical, sustainable warmth, UPF 30 provides sun protection during mid-layer breaks, Flat-seam construction eliminates chafing for next-to-skin comfort, Thumbholes secure sleeves and enhance layering system performance