Frankly, it's on/off for me. As soon as my run is done, or morning ride - it's off. I'm not accessing zippers. It is small and flimsy, which is why it is good. If you are planning on digging ditches in the dark, this isn't the reflective system you want. For me, I want a reflexive band that is so lightweight, out of the way and flexible I don't know I'm wearing it.

A negative for riders, it fits high -- for a rider in the drops I don't think the reflective areas are going to be visible from behind, it's designed for upright runners.