The Women's Stay Cool Eco21.5  Compression Pant has been engineered for the high-endurance athlete. These pants are designed to withstand high-impact athletic training while regulating the body's surface temperature. The heavy-duty construction and nano-technology is designed to enhance athletic performance, endurance, and speed the recovery of damaged tissues and tendons. The sleek two-inch waist band with internal drawstring, adds additional comfort, versatility, and support.