ULT stands for “Ultra low temperature”. This ink will cure as low as 270°F for the best energy savings, dye blocking, and shrink prevention. ULTII has a very soft hand, stretchable, bleed resistant, and works well on virtually all fabrics. If you are looking for a low temp ink for athletic apparel, that is light weight, highly bleed resistant, and doesn’t feel like you are printing a thick, heavy patch of ink or armor on your shirt, then look no further.