Men's Elite Design Winter Thermal Running Tights Long Pants with Ankle Zipper and Reflective Elements 90% Polyester 10% Elastane Imported Thermal Fleece fabric sets the benchmark in warmth and moisture transfer designed and constructed to fit perfectly to the body in motion. The perfect balance of anatomic fit, performance engineered materials and the personal interface between athlete and gear. The 3 core fabric technologies (Transfer, Thermal and Softshell ) create a system that works to help you maintain the perfect temperature for the weather conditions and activity range day in and day out Reflective elements offer high visibility during riding at dusk