Just put both shoulder straps over your hand bars and bring the base of the bag down and bungee it to your front bumper. Only problem is when you ride at night, it covers the light. I use a wide strap bag/camelback b/c the narrow ones cut into my sides. But I use a big one that I put everything in, from snacks and stuff when I trail ride. When I race, I take the bag out of a camel back and strap it right to the back of my chest protector that way I still have full movement and less weight. Plus I have it really cold at the start so it helps keep my body cool.