Set of 6, 10-ounce square bowl with lid Duralex is 2-1/2 times more resistant to breakage and chipping than normal glass Duralex 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, fridge and microwave safe; products maintain the original look for years Set of 6, 10-ounce square bowl with lid Duralex is 2-1/2 times more resistant to breakage and chipping than normal glass Duralex 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, fridge and microwave safe; products maintain the original look for years