RTIC 20 oz Ceramic Lined Everyday Tumbler, Spill-Resistant Straw Lid, Black

I like to munch on crushed ice. I have left it for 4 hours, with the lid off, and it has only melted to where it has stuck together some - but no liquid in the bottom! With the lid on, I have left it for more than 12 hours and it has only barely started to melt enough to stick together. I have left it in a hot vehicle for 2 hours and it was barely starting to melt! I can't ge over how well it meats my needs! I only have 2 items I would barely call 'cons'. The straw opening is a big plus for me in that I can turn my container upside-down and I might get a slow leak. On the other hand, it would be difficult to shove a straw through unless it was very stiff, like a steel one. And then there is little likely to be any air flow around the straw, making it difficult to suck anything out. Since I doubt I will ever use a straw, not a big drawback for me. My disappoint falls I not being able to put in the freezer, so that I can keep it frozen until ready. It's not a minus to the quality at all. I can see why no freezer - it would cause the metal and ceramic to freeze at different rates and destroy the cup! So I just have to live with my minor disappointment! Since it keeps my ice from melting for a long time, no freezer needed! Disappointment resolved.