With this set of 4 Duralex Picardie tumblers you'll never want to drink alone. Made from 100% non-porous, tempered glass, these 250ml tumblers feature a unique design that makes them stackable, saving you precious cupboard space. These glasses have thermal shock resistance, able to withstand temperature changes from -4 degrees F to 212 degrees F. | Duralex Picardie 250ml Glass Tumbler - Set of 4 - Marine