LOCK & LOCK Square Water Tight Food Container, Short (3.6-Cup) Four-side locking system creates an airtight, leak proof container Extremely durable, Lock and Lock containers are safe for use in the microwave, freezer, and dishwasher Stackable design helps you save space in the fridge, freezer, cupboard, and drawers Non-toxic and made from BPA-free material Square container holds 3.6 cups