As someone who practically runs on coffee during long hospital shifts, a good travel mug is an absolute essential for me! There's nothing worse than making a lovely hot coffee in the morning, only to find it's either too hot to drink before leaving the house or lukewarm by the time I finally get a chance to enjoy it. What I particularly love about the Ninja Sip Perfect is its clever temperature-focused design, making it easier to enjoy my coffee at a comfortable drinking temperature. The Onyx Black finish looks incredibly sleek and sophisticated, and the sturdy construction feels reassuringly well-made. It's comfortable to hold, convenient to carry around and fits beautifully into my busy morning routine. I also appreciate the practical design, which makes everyday cleaning straightforward. Whether I'm heading into work or out for a weekend drive, having my favourite coffee with me makes the day that little bit better. Definitely a travel mug designed with coffee lovers in mind!

I bought this few months ago. Sparingly used it. And somewhere in washing it, the tiny rubber seal got off. Whole coffee spilled. The rubber seal should've been sealed, not a removable part.

This is the best hot temperature mug I own and I have tried them all. It does an amazing top of dropping the product to the right temperature then holding it for prolonged periods of time. I used it and another known brand and after walking around for 7 hours in cold weather this was no different than first pour and the other was ice cold.

This is the second cup that I have had. The first one stopped keeping things warm after about a year. Ninja replaced it without any issues.

Love this cup. It seals tight, keeps drinks warm all day. Its durable and easy to clean. I love that the lid comes apart for better cleaning.

Wow this cup works amazing it's keep my coffee hot and my ice tea cold I am really impressed I have other mugs and they not even compare to this mug And a shout out to the gentleman that helped me your my hero brother in fact I think he should get a raise lol thank you for your professionalism very appreciated Randall Nutter

I love this thermos!!!! I do which it had a strap or handle for easier carrying. The lid mechanism is perfect and the unit definitely keeps my coffee at a drinkable temperature.

I have been happy with this mug. It keeps my coffee hot for at least six hours. It is easy to clean.

This is a very good travel mug. Keeps my drink hot for hours. Love it.

This is the poorest example of a ninja product I've ever seen. I own several ninja appliances and just love them, so I thought this cup would be a dream come true. Unfortunately it's a nightmare. It doesn't work any better than a cup costing a third of the price and it leaks like a sieve. I'm an engineer and I understand how a gasket works. I removed the gaskets and thoroughly cleaned both the gaskets and the seats. I made sure they were replaced properly and it still leaks. The cup itself seems to be well made but the lid leaks, sprays out a mist when you first open it, it is difficult to clean, and I'm guessing it would be very easy to lose the gaskets making the cup useless. The ninja sip perfect 16 oz travel mug does not live up to what I expect out of a Ninja product.