PRO Wool Extreme X Pants are pro-grade, tight-fitting long johns with 20% wool that keeps you dry and warm during high-intensity workouts in really cold conditions. This technically advanced baselayer is made of a soft polyamide and Merino wool blend that offers excellent moisture transport while also providing just the right amount of warmth for optimal comfort on cold winter days in the cross-country ski tracks and similar locations. In addition, the garment’s thin and functional fabric makes it a great choice also for hikes or treks on chilly spring and fall excursions.