Calvin Klein produce the highest quality clothing with all of the latest technological advances in fabric design. This is certainly true with clothing specifically for the golf market. Having said that, the new Starboard jacket can be worn both on and off the course. The body of the jacket is padded and is made from 100% nylon which is both lightweight and insulating at the same time. The shoulder area is made from 100% polyester and allows for a certain amount of stretch.