Velcast is the plaster cast made from fiberglass material. As compared to traditional plaster of Paris cast, it is light in weight and more durable. It is three times stronger and is only one third in weight. Fiberglass sets quickly, therefore experience is required to time the application well. It is hygroscopic (absorbs water) and setting time decreases with humidity and warmth. It is indicated to be used in those cases where the healing process has already begun, acute period of injury has passed and fractures which are not displaced.