Safe, secure, and high quality. 3mm width x 3m Gray, like black, does not show dirt. Safe, secure, and high quality. It looks good not only on denim masks but on any mask. It is very light and soft, so your ears won't hurt. Perfect for making masks. This is a round elastic specifically for masks! Combinations with other colors are also possible. If you wish to combine with other colors, please comment from the second image onwards. We will create a dedicated listing for you.