I bought this as a cycle accessory. I needed something to clip onto my handle bars to allow easier access to gels and food. I have shoulder problems that prevents reaching into my back pockets. This fits the bill. It has two clips that allow it to fit snugly over my Triban road bike. Its easy to reach and has more than ample space. Although you can forget aero i don't cycle to be fast. I'm usually out for three hours or so and this easily carried plenty of gels , foods , wallet , phone etc.
Has clips that allow attachment to handle bars
Zip not the best for what i need it for.