Duralex Lys Stackable Clear Bowls 1 Quarts Set of 6 Set includes six stackable clear bowls, Capacity: 29 oz. to the rim. Duralex is 2-1/2 times more resistant to breakage and chipping than normal glass, can withstand sudden thermal shock. Can also withstand sudden thermal shock, from -4f to 212f Dishwasher, refrigerator and microwave safe, Products maintain the original look for years Dualex glass is very hygienic, It is non-porous and does not absorb liquids, colors or flavors