This Authentic Collection 59FIFTY ® is the official on-field cap of Major League Baseball ® and also is worn by every Major League Baseball ® player. Performance is boosted via CoolBase technology featuring cutting edge wicking, exceptional drying, and also reduce resistance. Made with an embroidered (increased) Miami Marlins team logo design on front and also sewed Major League Baseball ® logo design on the back. Inside includes branded insulation along with a CoolBase wetness wicking black sweatband. Fitted, closed back.