92/8 Polyester/Spandex . Mid-profile; curved visor; 6-panels. Flexfit Delta is a revolutionary cap that is the lighter; sleeker; smarter and more comfortable choice. It fuses panels with a seamless; stitch-free finish and it couples a lightweight visor fabrication with a new 3-Layer multifunction sweatband. There's even patent-pending stain block tech that prevents sweat staining on the cap's crown. New lightweight; hard buckram.