This pack of origami sheets is made up of very thin, crip, transparent plastic. These thin sheets of brightly colored plastic will fold just like origami paper. The result is a transparent origami creation that will catch the light unlike any of the opaque or translucent papers! There are three sheets each of seven different colors, for a total of 21 sheets per pack. Also a great pack for scrapbooking, card making, collage, and more. Sheets measure 5-7/8 inch square.