Glass doesn't warp, stain or absorb odors. Full two year warranty Pyrex ovenware World Kitchen, Inc. promises to replace any Pyrex ovenware item that breaks from oven heat within two years from date if purchase. Full one year warranty on parts. Any part with a manufacturing defect will be replaced without charge with in one year from date of purchase. Accidental breakage from impact is not covered by warranty. Made in U.S.A.