Set includes: (1) each 1-Cup, 2-Cup, and 4-Cup Capacity Measuring Cups;Made of nonporous glass that won't warp, stain, or absorb odors;Glass is preheated oven, microwave, fridge, freezer & dishwasher safe;Stackable design to conserve storage space;Pyrex Glass is Made in the USA and comes with a 2 Year Warranty