The Luca Double Set

At 8oz, it's the biggest and best designed Glass sippy cup on Amazon 8oz of strong borosilicate glass make this cup non-toxic and durable. This cup is super strong! Slanted silicone straw reaches all the way to the bottom of the cup. Shock-absorbing silicone sleeve protects the inner glass, and makes it easy to grip, with a measurement window on the side.