Oscar jacobson franc golf caps this is a brand new line of golf caps from oscar jacobson that celebrate the upcoming 2017 spring summer collection oscar jacobson has been leading the way for more than 100 years in material technology and fashion design and for the past four decades been bringing a quality range of golfing attire to customers oscar jacobson franc golf caps are 100 polyester and feature five different colours with the oj logo embroidered on the front above the peak