Review (3/5): The lids leak.
It leaks immediately upon tipping. I might have expected some leaking from the slider mouthpiece but not from all other sides of both lids.
Also disappointed that a straw cleaner didnt come with as it is pictured in the Amazon ad.
As for it keeping ice for 24 hrs, I will update later.
UPDATE: Only keeps ice for @ 12 hrs but that is probably due to adding drinking liquids to it throughout the day. I have not tried hot liquids yet.