Amphipod Xinglet Optic Beam Max USB Rechargeable Vest

This one's tricky because it probably works for most people. For me the tubes are always coming undone/the size doesn't stay the same so each time i go to put it on its a very frustrating experience. I know that you can velcro the front etc but even then, the clamps just aren't grippy enough to keep the previous sizing. The colors seem fairly bright when I've used them, I don't know why the controls are on the back which is also weird. I see lots of folks wearing them so maybe I'm the one not understanding it.