A little more, and nothing could be seen. As could confirm the most Signal Processing focused ÜPEGs, "too much noise kills the signal". A finely tuned decision algorithm, and that will do it. Anyway, everyone managed to read the message, didn't they ? and to understand it...

Black tee shirt 100% coton (190 grams), with a nice blurred text (but not too much) on the front, and the "Engineered by ÜPEG" logo in the back below the neck.