Prepping, cooking and cleaning up your favorite meals takes enough time and effort, so storing leftovers or toting lunch to the office should be easy and mess-free. That"s why the OXO Good Grips LockTop Containers were designed with leak-proof, airtight lids that snap on easily and confidently. Just push the outer frame down onto the lid to engage the inner locking tabs and silicone ring for an instant, spill-proof seal. Durable, BPA-free Tritan Container bodies resist warping and staining, and are crystal clear to reveal contents inside. Lids are also clear to make contents viewable from above. Containers safely go from the freezer, to the microwave, to the dishwasher. LockTop bodies nest inside each other for convenient storage and each lid fits multiple Container sizes. Containers stack neatly without toppling, to optimize space in the refrigerator or freezer. 40.4-Ounce Small Rectangle is ideal size for lunch, leftovers and more.