Slick Sand will not get wet. Slick sand is saturated with silicon vapors. Silicon is a very slippery substance and these vapors reverse the way Slick Sand interacts with water. When kids pour water on it, the water will stay on top and flow, instead of wetting the sand and sinking down as happens with ordinary play sand. Paired with the fun experiments, the science behind Slick Sand is explained.  Kids will be introduced or further versed to terms and concepts like hydrophobe, hydrophile, conservation of mass, the biological composition of sand, and surface tension. Non-toxic. Slick Sand Includes: 1lb each of Red, Yellow, Blue, Green & Purple Slick Sand; Instructions and Information on Slick Sand.