PYREX® 18 Piece Food Storage Set includes 3-each 3 cup Round, Blue Plastic Covers, 2-each 4 cup Round, Blue Plastic Covers, 1 cup Round, Blue Plastic Covers, 7 cup Round, Blue Plastic Covers. Plastic lids are great for storage in refrigerator or freezer. Pyrex glass is safe in the oven, microwave, refrigerator, freezer, and dishwasher. Pyrex glass is non-porous, so it won't absorb food odors, food flavors or food stains. Limited 2 year warranty on Pyrex glass ovenware and limited 1 year warranty on Pyrex parts and accessories. Made in the U.S.A.