A performance singlet that helps you power through the miles in minimalist comfort with optimal aerodynamics and speedELITE Transfer In-R-Cool® fabric powered by coldblack® provides superior cooling and reflective sun protection,ELITE Transfer In-R-Cool® fabric features LYCRA® Sport that helps garments maintain original compression levels,ELITE Transfer Aero fabric is strategically placed for superior aerodynamics,Merrow stitch construction for superior next-to-skin comfort,10 inches zipper for venting,Two back easy access envelope pockets,Form Fit,Weather Forecast: Hot and sunny,Tenperature Rating: 25 to 35 degrees,Fabrics: Body is 78% nylon 22% LYCRA® spandex/ UPF 50+ with coldblack® technology, Shoulder and Back Panel are 80% polyester 20% elastane/ UPF 50+.