Duralex - Lys Stackable Clear Bowl 6 cm (2 3/8 in.) Set of 4 Set includes four stackable clear bowls, Capacity: 1 1/4 oz. Duralex, made of shattered resistant tempered glass, is 2.5 times more resistant to breakage and chipping than normal glass. Can also withstand sudden thermal shock from -4 F to 212 F Duralex glass is very hygienic. It is non-porous and does not absorb liquids, colors or flavors Dishwasher, refrigerator and microwave safe. Products maintain its original look for years. Made in France.