[RKDinOKC]

Those double wall aluminum beverage containers work great.

Put some ice and pop in one to have with lunch, left it on the counter, decided to eat out and went to run errands. Got back a couple of hours and the pop had turned to slushie! And yes I have heat in my house.

The other day I filled one with ice, no liquid, got busy, left it sitting on the counter ALL DAY. Went to use it that evening, saw the ice and thought great I can drink some ice cold, melted ice water. But noooo, after being out all day it didn't melt a drop. Must melt at the evaporation rate.

Got a couple of the 20oz from Walmart cause they are smaller around hoping they would fit in the Cayenne drink holders better than that 30oz Yeti...and didn't want to always be drinking out of a big gulp. But they are still just a little big to fit in the drink holders in the Cayenne. Don't understand all the paper, plastic, and styrofoam go cups from everywhere fit em fine. Must be some kind of insulated cup conspiracy.