The Sugoi Firewall Heavyweight GT Tight is designed for high mobility, weather protection, and a streamlined fit. This water- and wind-proof stretch thermal running tight hugs the body for superb insulation and heat regulation. Crotch gusset minimizes inseam bulk. 10" locking ankle zips. Inner key pocket at waist. Body: 80% nylon/20% spandex with 100% PU coating. MidZero stretch panels: 87% polyester/13% spandex with 3M Scotchlite reflective. Imported.