The Rubbermaid FG7L0600CIRED 6 Piece Lock Its Canister with 1- 3.7 Cup, 1 - 5.25 Cup, and 1 - 15 Cup Canisters with lids. With their built-in rubberized seal and four locking tabs Lock-its provides an extra secure lid for your food storage needs. Lock-its will also stay organized with the Easy Find Lids system: Lids snap to bases and other lids. You will never lose a lid again! One lid fits multiple bases and the various sizes nest for compact storage. Lock-its are safe to use in the microwave, freezer, and dishwasher.