The 7040 Block Grey is a superior bleed-blocking ink specifically formulated for use as an underbase for printing on dark or ligh-colored cotton/poly blends or 100% polyester fabric. This ink is a Phthalate-Free product. As its name alludes to, the ink is light grey rather than white in color. 7040 Blocker Grey is a highly pigmented, very opaque ink that is very creamy and short-bodied with low tack for ease of printing.