Ibanez & Gruv Gear did a collaboration recently, the outcome of which is shown above. Every Ibanez Iron Label instrument now comes with a complementary GG string dampener. It is unclear if black is the only colour offered as the initial batch of instruments getting this cool accessory is a Japan-only distribution in the mean time.
I'm hoping it would be extended to the international distribution as well & we know the upcoming Winter NAMM (2017) would have details on the matter. I'm also hoping that there would be a wider range offered under the GG/Ibanez selection & that we can purchase them separately instead of forking out (very much) extra for an Iron Label instrument to get hold of one (pathetic).