Made of thick non-fragile laboratory grade borosilicate glass. Designed for your everyday use, stronger, more durable, has passed freefall ice ball impact test from 16 inches height
Insulated to keep cold drinks cold and hot drinks hot, this handcrafted drinkware does not sweat
Two clear layers create illusion that liquid is suspended within
Dishwasher and microwave-safe. 6 month manufacture warranty.