[Elviza Isis]

I have had the same thick black elastic on my zills for probably two years now-- and only had to recently tighten them up a bit for the first time. But it is due to be replaced as one finger is pretty stretched out and I sure hope I can find the same stuff. I had used a black elastic previously on a different set that was about the same width (as wide or a little wider than the slots) but it was a thinner elastic with kind of a pattern on it-- that stuff unravelled along the edges almost right away and I've yet to do them over. Then I got this one which is also about that width (I guess like 3/4 inch maybe?) but was thick/dense enough that it was a bit difficult to put in and let me tell you what a world of difference from the original elastic both sets came with!! I can put the zills on and wear them forever with no blue fingertips, they stay put and are comfortable-- never again will I use that skinny little crap elastic! And I agree with Shira that black is so much better- I could never have gotten away with using this elastic so long if it was white, although I like the tips for dying white elastic to try and make it nude- still, I don't mind the black myself.