I love and adore my Ninja Thirsti™ 24oz. Travel Bottle, Mint. This is one of the best travel bottles I have ever used and I have a lot. Finally there is one designed for fizzy drinks. I am really astonished at how long it stays fizzy. I have left my holder out overnight, not gotten to it until I came home later in the evening the next day and it was STILL fizzy and cold. I use this everyday. I definitely recommend this to everyone.