Thanks for the comments Ralmd. I actually found NRS on the web and did a quick chat with them on line. I found out that the differences between the older and newer Chinook is basically the colors that are offered. 2017 color line up is Green, Charcoal and Orange. Last year's colors were Bark, Blue and Orange. This is a link to the vest on the NRS website: http://www.nrs.com/product/40009.03/...ok-fishing-pfd This is a short video on the vest: http://www.nrs.com/product/40009.03/nrs-chinook-fishing-pfd