SUGOi Women's RS Pro Bib Shorts 80% Nylon, 20% Spandex Made in the USA and Imported For improved-engineered fabrics for better performance Ultra aero fabric on Outer thighs for maximum aero efficiency Engineered fabric on front panels for increased breathability Re-engineered fabrics for better performance Ultra Aero fabric on outer thighs for maximum aero efficiency Engineered fabric on front panels for increased breathability