Rubbermaid Brilliance Glass Food Storage Containers are intelligently crafted, and beautifully designed. These glass containers have clear plastic lids with a 100% airtight, leak-proof seal, and secure latches to make reheating and storing easy. Built-in vents under the latches allow steam to escape so you can microwave food splatter-free, without removing the lid. Crystal-clear lids and bases make it easy to see what’s stored inside. The lids are made with StainShield plastic so they're stain and odor resistant, helping them stay looking like new. These food storage containers are space saving, with a modular design for perfect organization and stacking in your fridge or cabinet. The universal lids fit across all Rubbermaid Brilliance containers, regardless of material type. The glass container bases are also oven safe up to 450 degrees F.