It does exactly what it says it will! Ice stayed over 24 hrs. Carbonated drink inside was a breeze to open up. Fits perfectly in my car cup holder and backpack outside pocket. It’s a win for me! 
EXCEPT: in order to leave a review you must opt into: 
“You may receive emails regarding this submission. Any emails will include the ability to opt-out of future” 
 communications.
I wanted to leave a great review because I believe in the product. But I’m annoyed that now I’ll have even more junk mail and have to spend time opting out. I will not review any more products from this company because of that.