Durable - Made of triple density expanded polystyrene creating a durable container that is virtually unbreakable. Super Insulating - Preserves ice up to 30% longer than conventional ice pans. Stackable - Designed with an inner edge enabling the pans to stack on top of one another for easy storage and to maximize bench-top space. Lightweight - Extremely lightweight and easy to handle. Feature a molded lip around the edge for carefree moving/carrying.