The great thing about the Smartwool Classic Thermal Merino Base Layer Plus Bottoms is you can wear them for full relaxation mode, high-sweat activities, and low temp high reward excursions. No matter the activity, the high-quality Merino wool construction provides optimal breathability, thermoregulation, and odor resistance to support movement of all kinds. The mid-rise elastic waistband is covered in Merino wool for exceptional comfort and a great fit for all-day wear. We could go on and on and on, but we think you get the picture: these base layer pants are superior.