After several days of using the Ninja Thirsti 18oz Travel Bottle, I am amazed by its exceptional performance in holding cold and hot drinks. Its design embodies an elegant minimalism and features a thoughtfully crafted handgrip with flat areas on both sides, making it effortlessly easy to hold. This bottle has a lightweight construction that instills a strong sense of durability. Its dimensions are perfectly calibrated, allowing it to snugly fit into car cupholders and the pockets of my backpack. What's truly remarkable is its consistently effective leak-proof design, which has pleasantly surprised me by reliably preventing spills, even during the rigors of my daily backpack use. Beyond its standard features, I appreciate how the bottle's lid remains securely in place when open, thanks to a clever hinge-notch mechanism. The standout feature is its exceptional ability to maintain the temperature of both hot and cold beverages flawlessly. Crafted from stainless steel, it not only signifies durability but also resists rust. The double-walled vacuum insulation is a game-changer, ensuring that drinks remain refreshingly cold for up to 24 hours or hot for 12 hours. Furthermore, the addition of a leak-proof lid and a convenient silicone handle enhances its overall appeal. In conclusion, I wholeheartedly recommend the Ninja Thirsti 18oz Travel Bottle to anyone in search of a travel companion that possesses not only sturdiness and leak resistance but also the remarkable capability to preserve the ideal temperature of beverages for an extended period. Furthermore, it offers the convenience of easy cleaning in the dishwasher while also being free from BPA.

My new go to bottle. I spend a lot of time in and out of an office that requires all drinks to be in sealed spill-proof containers and this Ninja Thirsti travel bottle fits the bill. In fact, the more I use it the more I appreciate how well designed it is. Not just aesthetically, but there’s a lot of seemingly minor details that make a big impact on how convenient this travel bottle is to use. For instance, there’s a silicone leash that’s integrated into the top half of the body, no biggie, but the flat hinge for the leash makes a perfect anchor point to help twist the top half off without your hands slipping. Same with the 2 flat edges that run along the bottom main body which helps you maintain a good grip on the bottle without it twisting in your hands. Even the bottle cap itself is well thought out and possibly the best part about it. The square shape of the cap makes it easy to open, even one handed, and the cap leash has a detent that prevents it from hitting you in the face when you drink. Inside, the body has a smooth mirror polish which supposedly helps carbonated drinks stay fizzy longer. I can say that it definitely works, however I don’t know if it’s actually any better than any other sealed bottle. On that note, the sealing on this travel bottle is fantastic and has been 100% leak free in the week I’ve had it. It also does a great job of keeping drinks hot or cold. I wouldn’t say it’s the best I’ve had in that regard, but it isn’t a slouch either. I pack it with ice and water in the morning and the ice survives multiple refills of water and Sprite throughout the day until the evening. In terms of hot liquids, I’ll put hot tea in it at night and it’ll still be warm the next morning. Not hot, but warm enough to not need to heat it back up. The body also seems to stay at a neutral temperature which makes it easy to constantly hold. It doesn’t even feel warm when I put hot tea in it which is great, but a little jarring when you take a sip and forget that you put something hot in it. I can’t comment on the durability because I haven’t dropped it yet, but it’s made with stainless steel and BPA free plastic. It’s also dishwasher safe, though the instructions recommend hand washing if possible. Overall, this is an outstanding travel drink bottle and I highly recommend it. It has a leak proof sealing system, is easy to open, the cap doesn’t hit your face, keeps drinks hot and cold for over 12 hours, fits in cup holders, and looks pretty spiffy. As a designer, I also love the functional attention to detail like the easy open cap and flat grips. This might be my new go to for Christmas presents this year. Great job Ninja! PROS - Thoughtfully designed - Square cap easy to twist open - Built-in silicone leash useful - Leash hinge good anchor point to twist off top half - Bottle cap hinge prevents it from hitting your face - Flat edges on sides for easier grip - Fits in regular cup holders - Keeps drinks fizzy - Leak proof - Maintains hot and cold temps for hours - Attractive design - Machine washable - 18oz size CONS - Sometimes cap doesn’t twist on properly - Don’t know if it really keeps drinks fizzy longer than other sealed bottles

My wife and I have tried many different travel bottles to find one that holds a reasonable amount, is easy to carry, keeps temperature, and actually fits in our vehicles' cupholders. The Ninja Thirsti is as close to perfect for us as any bottle we have ever tried and looks nice too. Pros - Solid feel, with a nice textured exterior that looks great and is easy to hold. - Integrated rubber carrying handle works great (you can flip it down to carry the bottle with your hand thru it for a better grip or flip it up and carry the bottle with the rubber handle by itself). - Twist open cap remains attached, even when open for a drink, and seals well with no leaks when closed in any bottle position. - Awesome at keeping fizzy drinks fresh. I found that my carbonated beverages stayed fresh for well over 24hrs and still opened with a satisfying hiss. - The 18oz size is a perfect fit for every vehicle cupholder I tried (2017 Mini Countryman, 2021 Toyota Highlander, 2022 Toyota Sienna, and a 2020 Jeep Gladiator). - Stainless interior is easy to clean. Ninja says the bottle is dishwasher safe, but we found it easy enough to clean with just soap and water. Things to Consider - The Thirsti is good at keeping things at temperature, but I was not able to get the 24hrs for cold items and 12hrs for hot items that Ninja claimed. I found the limit for me was about 8hrs, before hot things became just warm and iced drinks (half ice/half liquid) completely melted. - It is about a 1/2" too tall for our older single cup coffee maker, even with the drip tray removed - not a deal breaker, but it just adds an extra step of brewing hot drinks in a shorter cup and then pouring it in to the Thirsti.

The Ninja Thirsti is a game-changer when it comes to travel bottles! It's compact, lightweight, and has a sleek design. The 18oz capacity is perfect for staying hydrated on the go without taking up too much space in your bag and fits nicely in my cup holder. One of the standout features of the Ninja Thirsti is the new Triplethermo technology. This model is designed to keep your drinks colder and fizzier even longer. Cold for 24 hours. Ice for 2 days. Hot for 12 hours. Now my real life test.. I will say I do think it keeps colder longer than my competitive leading brand, but the fizz was hard to tell in the short time have used it so far. When I tested how long the ice would last, I filled it halfway with ice and 12 hours later I had some left. So, you will get a couple more hours than the 12, but not 2 days, unless maybe you fill it packed with ice.. just my opinion. The leak-proof lid is another highlight of this travel bottle. You can toss it in your bag without worrying about any spills or leaks. Plus, the wide mouth makes it easy to fill up and clean. However, it does take two hands to open and close. I do prefer the option of a push button you can open with one hand. I am so used to my current model with this feature, that I find it hard to get used to this twist top. (-1 star) The carry handle is large and made of rubber, which make it very comfortable to carry and hold. I also appreciate the durable construction of the Ninja Thirsti. It's made from high-quality stainless steel that can withstand the rigors of travel and everyday use. The bottle is also BPA-free, which is always a plus when it comes to health and safety. Overall, I highly recommend the Ninja Thirsti 18oz Travel Bottle. It's a reliable, stylish, and convenient companion for all your adventures. So whether you're sipping on a refreshing iced water or enjoying a piping hot coffee, this bottle has got you covered! Cheers to staying hydrated wherever you go!

Verdict: The Ninja Thirsti 18oz. Travel Bottle is a stylish bottle that keeps cold drinks cold, hot drinks hot, and fizzy drinks fizzy! It works, and it works for longer than my old coffee mug, and definitely better than my current plastic water bottle. As a sparkling water lover, my favorite feature is the bottle’s ability to keep my sparkling water cold and fizzy for most of the day, even when on the go. First impressions. This bottle is fairly tall, mostly because of the extra footprint of the twist cap. I really like the silicone handle because it swivels, it’s comfortable to hold, and if you grab the bottle on the top end, the handle just folds under your hand so it’s still easy to grab. It fits in all my car cup holders. The square twist cap is easy to grab and turn. This bottle looks very nice: sleek and stylish. Performance. This bottle works well in all applications: hot, cold, ice, and fizzy. While I appreciate the versatility of the bottle, I mostly care about keeping my coffee hot and now keeping my sparking water cold and fizzy. On my first day of using this bottle, I noticed that my coffee was indeed hotter a few hours after making it then it has been for the last few years of using a different mug. On my second day of using this bottle, I decided to try it with my daily sparkling water. Normally, I take a cold sealed 1L sparkling water plastic bottle and toss it in my backpack for the day before leaving for work. By noon, my sparkling water is still fizzy but warm. With this bottle, my sparkling water stays cold all day. The only downside is that I can’t fit the entire 1L sparkling water in the Ninja bottle, so now I pour most of my sparkling water in the Ninja bottle, and I start drinking what is left in the plastic bottle first while it is still cold. Then, when I switch to the Ninja bottle about mid-day, my water is still cold and fizzy. Now I only use this bottle for fizzy water, but I am considering buying another one for my coffee! Technology. The technology in this bottle is impressive. LeakLock prevents any leaking from the cap, even with fizzy drinks. Triplethermo shielding keeps drinks cold for 24 hours, ice for 2 days, and hot for 12 hours. Finally, the interior is “super-polished” to prevent nucleation points that cause bubbles to pop. This feature, along with the BubbleLock lid keeps drinks fizzy for longer. When opening the cap, you can hear a very satisfying “woosh” from the pressure released inside the bottle. This bottle is so good that I wish I could store my entire 1L sparkling water in it, but that would probably make the bottle too big and unwieldy. Things I love. - Stylish bottle - Easy to use square twist cap - Keeps my sparkling water cold and fizzy all day! - Stainless steel with durable protective coating - Comfortable silicone handle - Dishwasher safe! - Triplethermo: cold for 24 hours, ice for 2 days, and hot for 12 hours!! - Five-year warranty! Things I don’t love. - Nothing… it’s amazing! Overall, the Ninja travel bottle is a win! It hits the mark on all advertised features, and it checks all the things I care about. Most importantly for me, it has improved my daily consumption experience of sparkling water. Lastly, I think the value for the money for this bottle is excellent, specially compared to the prices of many other bottles in this space. I highly recommend this bottle.