It"s easy and fun to mix-and-make your very own plaster casting creations! Much like plaster of paris, this wonderous arts and crafts compound is simply mixed with half part water, then poured into shapes, molds, etc, Sandtastik PLASTERMIX sets in just 20-30 minutes, Then your keepsake ornaments are ready to decorate! Available in 8 colors, it"s the perfect craft activity for kids birthday parties, classroom projects, camps, home and more, SKU: STTP238