The Outdoor Research Alpine Onset Merino 150 T-Shirt is the lightweight foundation we rely on for outdoor adventures and everyday comfort. Crafted from a breathable blend of recycled polyester and Merino wool, this base layer combines the best of both worlds—natural temperature regulation, moisture-wicking performance, and quick-drying durability. A touch of elastane ensures freedom of movement, while UPF 30 protection and flat-seam construction add to its all-day functionality. Whether climbing, hiking, biking, or running errands, this versatile shirt adapts effortlessly to every activity.
Material: 47% merino wool. 47% recycled polyester, 6% elastane;
Fit: regular;
Style: crew;
Hood: none;
Claimed Weight: 6.3oz;
Activity: yoga, casual, hiking, camping;
Manufacturer Warranty: limited lifetime;
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