Why an open zip tri suit?

This style is easier to get on and off (especially if you're in a hurry) as it combines the comfort of a one piece, but the practicality of a two-piece tri suit. The open zip also tends to fit more shapes and sizes, as there is overlap between the waist band and the top, if you're longer or shorter in the body the overlap just increases or decreases. Finally, the open zip ensures that there is no risk of zip malfunctions, so you can race with confidence in the zip.