Review (3/5): Check all rubber bands before using
I checked the quality right away when I got them. One of the black rubber band was not well made. It didnt seal completely on the end, so it looked it will snap off any min if I try to pull. And yes, it did snapped off. I checked the other 5, they were fine. I have been using them since I got it, the clear one lasted for about a month now. And I dont bother to return them.