With Profile Design's Universal Computer Mount, there's no need to leave your computer or GPS off your bike just because you put your aerobars on. The mount easily attaches to the extensions to put your computer in an ideal viewing position when you're on your bars, and it comes in two sizes -- 25mm and 60mm -- to accommodate most standard aerobars. Made with durable injected nylon/glass fiber, it won't add much extra weight to your frame, and your device will stay where you need it to for your next time trial or triathlon.