Pyrex Storage Deluxe Square Shaped Clear Glass Baking Dish ~ Vented Snap-on Blue Storage Lid ~ Large Deep Dish Size Vented lid allows steam to escape while in microwave Snap-on-the-bottom lid prevents the lid from being misplaced and prevents glass to glass contact for protection Footprint on the lid allows for easy stacking during refrigerator or freezer use Quality Pyrex glass is safe for oven, convection, microwave, refrigerator, freezer use and is dishwasher safe Made in U. S. A.