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.<br />Also disappointed that a straw cleaner didnt come with as it is pictured in the Amazon ad.<br />As for it keeping ice for 24 hrs, I will update later.<br />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.
Rating: 3 stars