The Switch Aero, is a handlebar and seat post system that allows you to switch back and forth between a road position and an aero position on-the-fly. The system retrofits your existing bike by using removable quick release clamps for the Aerobars, and a seat post that simply pivots from road position to Aero position. Riding with an aero bar and properly set seat on your bike greatly reduces the amount of drag while riding. The caveat has always been that you need to choose if you are going to ride the entire race in aero position before you start. With the Aero Switch system, you can make that decision at any point in the race.
"The Switch Aero System gives you the flexibility to choose the best setup for every part of every ride. If you’re going out for a group ride, you can leave the aerobars at home and ride a pure road bike. But if you’re racing in a triathlon or doing a charity ride, you can throw the aerobars on and choose the best position for every climb, flat, and descent." Switch Aero funding page
The Switch Aero is available on Kickstarter. You can get the Dual Position Seat Post, or the Quick Release Aerobars individually for $125 ($109 for early backers.) The aerobars and the seat post sell as a set for $225 ($199 for early backers.)