WARM COVERAGE FOR COOL-WEATHER CONDITIONING. Shrug off the chill before and after training or competing on cooler days in the Nike Pro Therma-FIT Pants. Soft French terry fabric teams up with built-in breathability to keep you warm without overheating. They're made with at least 75% recycled polyester fibers. Soft Feel: French terry fabric feels soft and comfortable. Lasting Warmth: Nike Therma-FIT technology helps manage your body’s natural heat to help keep you warm in cold-weather conditions. Built-in Breathability: the hems unzip so you can adjust your airflow down low. The breathable inset at the upper back releases excess heat to help prevent you from overheating More Details: Standard fit for a relaxed, easy feel. Body: 100% polyester. Panel: 90% polyester/10% spandex. Machine wash. Imported. Elastic waist with drawcord. Zippered pockets on front. 100% POLYESTER.