Zoot Women's Ultra Run Racerback 100% Polyester 82% Polyester/18% Spandex, 79%Nylon/21% Spandex BIOwrap Bra with Dynamic X Support; ULTRAcell with Icefil provides moisture activated cooling technology that responds to your sweat, reducing skin temperature up to 11F Machine wash cold, Gentle cycle, No softeners, Dry Flat, Do not bleach, Do not dryclean Side Stash pockets; Reflective detailing; 24" (61cm) body length; Flatlock construction ensures next-to-skin comfort ; Side Stash pockets; Reflective detailing; 24" (61cm) body length; Flatlock construction ensures next-to-skin comfort