4 years and up. Looking for an easy and fun kid's science kit? Steve Spangler's Insta-Snow is a special mixture of powders in which you can have a snow day any day with this cool polymer powder! Just add water to the powder and watch it erupt into fluffy white "snow" in seconds! Kids won't believe their eyes! Let it dry and reuse it again and again. Teaches about the science of polymers, matter and its interactions and water absorption. Includes Insta-snow 400 g, measuring scoop® and an activity guide.