Simple Modern Wave vs Tronco 20-Ounce Glass Tumbler

By the evening there was only one or two shreds of ice left. I decided to stop drinking it after 6 hours to really test it. I left it sit overnight probably half way full maybe less and that shred or two or ice cubes left. I woke up the next morning and the ice was all gone but the water was still ice cold somehow! Very impressed

With the straw opening, we expected the Tronco to be prone to spills. Instead, it proved to be one of the most secure of all types due to the sealed silicone ring. We were a bit concerned about the durability of the glass at first, but the glass is thick, and the sleeve kept it protected and intact throughout our testing period, even with a few short drops.