Pyrex Storage Deluxe 1-7/8-Cup Rectangular Dish, Clear with Blue Lid Vented lids allow steam to escape while in the microwave Snap-on-the bottom lid prevents lids from being lost or misplaced and allows for compact cupboard nesting without glass-to-glass contact Footprint on the lid allows for easy stacking during refrigerator/freezer use Pyrex glass is safe in the oven, microwave, refrigerator, freezer, and dishwasher Made in the U.S.A.