From Zwilling, the Sorrento Double Wall Coffee Mugs and Beverage 9-Piece Glassware Set features:  Set includes two 11.8-oz latte glasses, two 12-oz. coffee mugs, four stainless steel straw spoons, and one stirrer Borosilicate glass and 18/10 stainless steel Double wall maintains the perfect temperature of beverages Keeps hot drinks hot while remaining cool to the touch and cold drinks stay cool for longer with no messy condensation Produced by hand (Blown glass) Designed by Matteo Thun & Antonio Rodriguez Excellent breaking strength Dishwasher safe Imported.