· LEAK-PROOF AND AIRTIGHT: Rubbermaid Brilliance Glass Food Storage Containers have crystal-clear lids that are 100% airtight and leak-proof, plus odor and stain resistant· EASY STORAGE AND REHEATING: Glass containers have vented, microwave-safe lids for easy, splatter-resistant microwaving· SPACE SAVING: Space-saving, modular Rubbermaid containers are perfect for stacking and organization· OVEN-SAFE: Glass bases are oven-safe up to 450 degrees F, so they double as glass cookware and serveware· EASY TO USE: BPA-free, dishwasher-safe (use top rack for lids), microwave-safe for reheating only with lids unlatched, and freezer-safe· SMART LID SYSTEM: Universal lids fit across all Brilliance containers, regardless of material type· SET INCLUDES: Three 1.3-cup, two 2-cup, two 3.2-cup, one 4.7-cup, and one 8-cup glass containers with lids, for a total of 18 pieces