Ninja DW2401BK Thirsti 24oz Travel Water Bottle, For Carbonated Sparkling Drinks, Colder and Fizzier Longer, Leak Proof, 24 Hrs Cold, Dishwasher Safe, Stainless Steel Insulated Tumbler, Onyx Black

Fair warning up front, I have not had this long. It's worked quite well since I got it. I recently started carbonating my own beverages, and this has done quite a nice job of keeping them at least sparkling over an 8 hour shift. It does an excellent job keeping the drink cold (I have not tested anything hot). There's a little rattling noise now, like a bit of solder bouncing around in the vacuumed area of the bottle, but I haven't noticed any decrease in utility. It certainly keeps ice well, I have had it keep ice machine ice in there for a day. It's a bit short of a liter in volume, but it holds a good amount and I've not seen any leaks. The cap takes a bit of getting used to, but as long as you push it far enough towards the handle it will stay put as you drink. It doesn't keep things fully carbonated, but that's no surprise if there's no pressure to keep the gas in the liquid after you drink >half the bottle.

I love this water bottle. I prefer seltzer to water and this bottle keeps my seltzer fizzy. It stays cold a long time and the bottle is very sturdy. Excellent!

Keeps my carbonated drinks cold and fizzy for a long, long time! Place it under your Ninja Thirsti, make your desired beverage, and away you go! The attached strap makes it easy to carry and it's slender design allows you to place it right in your car's cup holder.

My Amazon review:Absolutely—here’s a short, funny review you can share with your colleagues:Had a damn fine day with the Ninja Thirsty. I drank more water than ever because I couldn’t see the water line—so I chugged it down like a champ. My other bottle always tricked me into thinking I had enough, but this thing stayed cold, looked good, and made me realize I’d slammed 85% of my daily water by 1 PM—usually I’d be stuck at 60% by then. Fits in my car cupholder like a dream, unlike my sippy cup. 10/10 would sip again, but I definitely need to pace myself!

I have been waiting for something like this for probably 30+ years. Or at least since stainless steel water bottles have become super popular. I am undoubtedly a Diet Pepsi connoisseur for 30+ years. I hate nothing more than warm nasty soda. I just happened to come across this little miracle while playing around on line. It was like the clouds opened up and I heard "aaaahhh" and it was amazing! I had to hurry up and buy one and waiting the 3 days to receive it was torture. Finally the day if arrival. I unpack it lovingly, wash and dry it. I get started on my DP pour into my magical new bottle that promises ice cold soda for 24hrs. This is AMAZING. It works just as stated and the carbonation is handled perfectly. No more carbonation hitting me in the face when I tried to make just stainless steel bottles work. If you are like me and love carbonated drinks, this is a must have and worth every single penny!!!!

It keeps my water cool and refreshing for a long long timeDoesn’t cause funny tasteI love that it doesn't have a strawThe only issue is that both sizes won’t fit in the cupholder as advertised

I recently started using this water bottle, and I’m really impressed with its performance. The design is sleek and modern, making it both functional and stylish. It keeps my drinks cool for hours, thanks to its excellent insulation, which is perfect for hot days or long workouts. The bottle is also leak-proof, so I can toss it into my bag without worrying about spills. The material feels durable and high-quality, and it’s easy to clean, which is a huge plus. I also love the size options, allowing me to choose the perfect capacity for my needs. Overall, this water bottle is a game-changer for staying hydrated on the go, and I highly recommend it to anyone looking for a reliable and convenient hydration solution.

I must have carbonation — I can't stand flat flavored drinks. I put this Ninja to the test on Friday night: filled it with ice from my fridge and added carbonated water. All weekend long, I alternated between sparkling water and natural energy drinks. Not only did the ice last 2 full days, but everything stayed fizzy until the last sip!I’ve used Yeti insulated cups before — great at holding ice, but the carbonation? Gone within minutes. The Ninja has officially earned its place: Yeti for hot tea, Ninja for all my cold drinks from now on.Only problem? Now I need to buy another one for the office. 😂