Use specially formulated colors to create anything from deep blue oceans to muddy rivers with Water Undercoat(TM). Colors not only act as a sealant, but they can also be blended to make dark depths and light shallows. Apply before adding Deep Pour Water(TM) or Realistic Water(TM). Create customized colors by mixing Water Undercoats together. This package contains 3.75 fl oz (0.11 L) water undercoat. Made in USA.