Layering up for a day outside works best when the base layer stays out of the way, and the Olympus Merino Baselayer Legging pairs a slim fit with flatlocked seams that prevent friction under outer pants. Midweight 250 merino wool carries the warmth through a full-length cut, and added elastane holds the shape so the legging lasts longer. What Our Gearhead(R) Experts Are Saying:"On a long climb in the cold, the merino mesh panels behind the knees let heat out as I worked harder. When I slowed at the top, the midweight merino held the warmth my legs had built."