The Ultra•Seal™ 8.1 Quart Bowl features a gasket and four latches in the lid that create an airtight and watertight seal to keep food fresh and prevent liquids from leaking. Ultra•Seal™ bowls stack securely when in use and store efficiently when not in use. This bowl is the ideal solution for storing, transporting and serving larger portions of salads, snacks and desserts. Ultra•Seal™ containers are freezer, microwave and dishwasher safe, as well as BPA-free and phthalate-free.