The Duo Glass is a hand blown 10 oz double wall borosilicate glass that is crafted to insulate, measure, and compliment your every drinking experience.
The double wall design of the Duo glass insulates better and reduces condensation so that no coasters are necessary. The rounded inner glass perfectly cradles a large ice ball - a silicone ice mold is included with every glass. The integrated 1 oz measuring lines blown into the inner glass wall allow for easy measuring and make it a cinch to craft cocktails directly in the glass.
Caring for your Duo Glasses:
While the Duo glass can be cleaned in the dishwasher - we do not recommend it for the longevity of the product. Being that they are hand made, the manufacturing consistency will vary from glass to glass -- something to appreciate!
As you can see in the image below, each hand blown glass has a 'plug' that maintains the air seal between the inner and outer glass. The more frequently these are blasted with the hot water cycle of the dishwasher, the likelihood of this hand inserted seal opening up increases.
Keep your glasses for a long time... hand wash them!