The best groupset in the world deserves its own jersey, at least Shimano feels that way. It is also nice to see Shimano bust out of their comfort zone of producing components to give us a solid jersey design that's good looking to boot. The fairly simple design features a sculpted fit with anatomic graphics, so the jersey looks anatomically correct on the bike.
The Dura-Ace jersey features WickTex fabrics on all panels. This open-cell polyester composition is light and does a good job and wicking moisture away from your skin to keep you dry. This fabric is coated with Shimano's proprietary MirrorCool treatment which cools you down by reflecting sun rays and heat off of the jersey.
There is a full length YKK Camlock zipper that offers good body temperature regulation. The rear of the jersey has three pockets for storage as well as an added center zip pocket. In regards to each end of the jersey, there is a top collar that is small and low profile and a lower hem that is elastic and has a silicone bead to keep the jersey in place.