These have been out there for some time now but these are so good. The next time you are on your tri bike put some thought in how much effort it takes for you to move that shift lever and then come back to this post. The Zipp Vuka R2C makes it’s easier and more comfortable to shift in the aero postion. The key selling point with this product is the ability for the shifters to return-to-Center which keeps every shift at your fingertips. A click up or a click down the shifters will always return to center. Plus they look great as well. You can order these for Shimano as well as SRAM.