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12 Days of OR Limited-Edition Stickers! Explore The Lineup
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The Alpine Onset Merino 150 Base Layers feature a newly updated, softer, non-mulesed merino wool blend and UPF 30 sun protection for stretchy, moisture-wicking, breathable warmth that's naturally odor-resistant for extended, multi-day wear between washings.
Outdoor Research® gear is guaranteed to perform throughout the lifetime of the product.
Free shipping on orders $99+! Need it by the holidays? See our shipping page for all deadlines. Final sale items are not eligible for return or exchange. For more information, see our returns/exchanges page.
The Alpine Onset Merino 150 Bottoms are a soft, breathable, moisture-wicking bottom designed for use as part of a strategic layering system for active outdoor wear while skiing, snowboarding, climbing, hiking, and more.
Crafted with a non-mulesed merino wool blend, this lightweight, breathable, wicking, and quick-drying base layer ensures comfort while stretching and moving with the body for unrestricted movement and a natural range of motion. The flat-seam construction delivers chafe-free performance, while the elastic logo waistband provides low-profile comfort that perfectly layers under a shell and mid-layers. And when the need arises to strip down to the bare minimum, the UPF 30 rating shields from the sun's UV rays.
When layering up for a long day in the mountains or a chilly morning workout, the Alpine Onset Merino 150 Bottoms are the ideal foundation to the perfect layering kit.
*All sizing is based on your body measurement.We adjust the garment for intended fit and intended use.
Conforms to the shape of the body.
