"This products is made of soda lime glassware which are completely hygienic and safe to use. Highly trusted by all food service professionals for the quality and durability of products Heat and scratch resistant product. This products is made of soda lime glassware which are completely hygienic and safe to use Dishwasher and refrigerator safe. Wide for Serve your favorite smoothies, milkshakes, dessert, ice cream, root brew drifts, or any other cold treats."