Transition is a very different piece than the Dragon. First of all the fabrics are completely different. The Transition fabric is what used to be called N2S or "next to skin" but is now called "Windstopper Softshell." The Dragon Jacket is made with "Scuba" fabric also a Windstopper softshell but very different. The Dragon Jacket is a more full featured shell designed with climbing and snow sports in mind that has pit zips, pockets, a hood that will accomadate a helmet, iPod pocket, and hand/thumb loop gaskets on the cuff in a package that is not as tight fitting as the Transition. The Transition was designed as a cold weather high output aerobic piece that is trimmed down without all the bells and whistles for running and skate sking. The only pocket on the Transition is an inside iPod pocket and a side access zip pocket on the low back. The "Green Flash" color is the same (as they can be) on both pieces. Hope this helps!