Review on Tronco 18Oz Glass Tumbler With Bamboo Lid And Straw, Glass Cup For Boba,Iced Coffee,Smoothie, Spill Proof Glass Water Bottle With Silicone Protective Sleeve, Dishwasher Safe,BPA Free by Mike Maez

The silicone sleeve felt strange in the hand, and it would side on the glass as it sweat.The lid did not screw on, which means if it fell over it would leak, or the lid might pop off. The silicone ring around the edge of the lid did not feel tight or snug once liquid was in the cup.It felt fragile when trying to use it, like at any moment it might break or slip out of my hand. Not to mention the level of sweating it did in my Florida home. Not a good glass for iced drinks, or if you're clumsy.