Zoot SPORTS Men's Performance Tri 8-Inch Short Body: 74% Nylon / 26% Spandex, 228gm2/ Inset: 80% Nylon / 20% Spandex, 193gm2 / Inset 2: 79% Polyester / 21% Spandex, 228gm2 Imported Reflective details for visibility in low-light conditions