Build upon a high-performance foundation in the Thermopolis Run Pant from ASICS. Polyester and Lycra blend for high breathability and moisture management. Thermopolis XP technology provides warmth from chilly mornings to crisp evenings. Product features include: 88 percent polyester and 12 percent Lycra fabrication, Two zippered side pockets, Low light reflectivity, Semi-fitted design, Interior key pocket.