Manufactured from approved USDA/FDA materials, these lids fit the cross stack tubs that nest when empty or can be turned 90 degrees to cross stack, providing easy access to items when stacked.Details:BlueAvailable in multiple sizesInjection molded from durable, high impact polypropyleneEasy to cleanFor use with Quantum Storage Systems® Blue Cross Stack Tub (sold separately)Tubs can still stack or cross stack with lids in place