What are rice crispys?

'Rice Krispies' is a brand name by Kelloggs. It is a cereal consisting of puffed rice balls which as crunchy. In milk, the rice reacts by popping audibly, making the cereal popular with children and thus giving the idea for Kelloggs' slogan 'Snap, Crackle and Pop!' 'Coco Pops' are Rice Krispies with chocolate coatings, and 'Riciles' are Rice Krispies with sugar coatings.