Men's Alpine Onset Merino 150 Bottoms | Outdoor Research

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.

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 Bottom is the ideal foundation to the perfect layering kit.