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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. Plus, extended returns through 1/31/25. Final sale items are not eligible for return.
The Alpine Onset Merino 150 T-Shirt is a soft, breathable, moisture-wicking top 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 quick-drying base layer hoodie is soft to the touch and moves and stretches with the body. The lightweight construction provides breathable warmth without the bulk, and UPF 30 protection allows for layer shedding while still protecting from the sun. The flat-seam construction ensures chafe-free performance, while set-in sleeves deliver a dialed in fit and function.
When layering up for a long day in the mountains, on the bike, or a chilly morning workout, the Alpine Onset Merino 150 T-Shirt is 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.
Apparel that skims the body for an athletic fit.
