Sugoi Men's Firewall 220 Tights front PANELS : 92% Nylon, 8% Spandex Face, 100% Polyurethane Laminate, 100% Polyester Back / BACK PANELS : 88% Polyester, 12% Spandex / POCKET BAG : 100% Polyester Imported MidZero back for thermal warmth and stretch 9 inch locking ankle zippers One bonded reflective back pocket for carrying essentials