The Kari Traa Rachel baselayer pants add mesh panels at the inner leg, behind the knee, and across the upper hip for breathability and freedom of movement. These merino wool baselayer pants blend in Tencel for quick drying and elastane for stretch. What Our Gearhead(R) Experts Are Saying:"I wore one pair on back-to-back ski days and skipped the wash in between. Odor was never an issue because the merino wool in the face fabric resists it."