This remarkable material is a form of polyacrylamide. It is capable of absorbing many times its own weight in water but, unlike other hydrogels, it expands rapidly when it gets wet to form a snow-like mass. Injected into a stream of high pressure water, it emerges as the high pressure snow seen on TV and film sets. It is non-toxic and re-useable. As a rough guide to quantify what this snow will make; one handful is enough to make 1 bucket full of snow. supplied in a pot of 100g.