COKTIK 40 oz Tumbler With Handle and Straw Lid, Vacuum Insulated Travel Coffee Mug Stainless Steel Insulated Cup for Beverages, Leak-proof, Cupholder Friendly (Seafoam)

I’ve been using the COKTIK 40 oz Tumbler for a few weeks now, and it’s exceeded my expectations. The double-wall vacuum insulation keeps my drinks cold for over 24 hours. The sturdy handle makes it easy to carry, and it fits perfectly in my car’s cup holder. The tumbler is made of high-quality stainless steel, and the design is sleek and attractive. Cleaning is a breeze, especially with the included straw cleaner. Overall, this tumbler offers excellent value for the price. Highly recommend!

Love the color and size, happy I don’t have to keep refilling. Only downside is that it’s heavy. Happy with this purchase. My beverages stay cold for over 24 hours and Ice stays frozen for a long period as well.

Okay…first, I’ve never owned a Stanley tumbler or any other name brand for that matter. I can’t imagine what would make one worth so much. I researched a lot of them, and settled on this one for right at $20. It was well worth it. It does have to be washed by hand, which is no big deal to me. It came with a straw cleaner and a sponge cleaner for the tumbler itself. Those were nice extras. The lid turns easily and settles perfectly to drink from the spout. It has a great spout lid that snaps in place well, and when opened, lays all the way back out of the way. The straw hole is centered in the middle and has a rubber closure. It fits perfectly, and is good quality. The cup part also feels quality and has a normal taste. It came with a rubber attachment that fits onto the bottoms to make it more stable sitting on slippery counter tops. I love the handle. It’s smooth and easy to hold. I tested it with ice at starting yesterday morning, and it still has some ice left in it all the way to the next evening. That’s about 36 hours. After 24 hours, most of the ice was still there, and I even poured luke warm coke on top of it. Still didn’t completely melt at the end of the second day. It came in a very nice box, is a beautiful color, and had a nice note that offers a full lifetime warranty if you are unhappy with it. It is also says it is BPA free, non-toxic, and eco-friendly, and 10 cents of every bottle sold is given to poor, drought affected areas. I’m happy!!!

Perfect.. Came packaged well. Included a rubber bottom that you can remove. 2 straws and 2 cleaning utensils.

Perfect size and has kept my beverages cold for at least 2 days.

Yesterday morning I filled this cup about 2/3 full of ice, and this morning there was still enough for today’s drink. Now, about 40 hours later, there’s still a bit left. In short, it keeps the cold very well. The tumbler and I got off to a very rocky start, however. Like most of these designed to fit in a car cupholder, it’s fairly tall and a bit top-heavy. No leakproof lid will keep the contents from spilling if it isn’t on the cup. While I was filling it, I clumsily tipped it over. That didn’t make me love it. Then, in my Toyota Rav 4, it didn’t fit the cupholder well. The silicone boot stuck in the holder and detached from the cup. Taking that off only let the cupholder scratch against the metal. That was it for me. I began the process of a return to Amazon. But in using the tumbler, noticing how well it kept the cold, admiring the color (shale), and comparing its sturdy build to others, I decided to give it another chance. I replaced the silicone boot with a more substantial one. Now the cup slides into and out of the cupholder without issues. I decided to keep it, and glad I did. Return cancelled. In fact, I’m so impressed I ordered another one of a different color. I’ve not tested it for hot drinks, but it is more than satisfactory with cold. The build is solid. The handle is metal; how it is fixed to the cup is unclear, but it is firmly attached. Two rivets, visible on the outside of the handle, hold a plastic insert firmly in place for comfort of grip. The lid and straw seem well made. With a little practice one can learn where to start screwing on the lid so the sip hole will end up in the desired position. I haven’t tested it for leaks—that’s not an issue for me—but don’t think it could leak much if at all. The only issue I had with the lid is that if it’s screwed on too tight, it’s hard to loosen. All in all, a great 40-ounce tumbler. Time will tell how it holds up, but now I’m very satisfied with this purchase. I unqualifiedly recommend.

Best (affordable) 40 oz tumbler I've found, so far. Good for engraving, very sturdy, nice spillproof features on the lid. The handle is metal, welded onto the tumbler, so it won't break off if tipped over. Fits in standard size car cup holders, but that is what makes it topple over more easily if bumped. Wish it came in more "manly" colors, as this is a gift for my son.

This 40oz tumbler has great durability. The lid is only a bit shaky when it's not twisted on correctly and firmly. It keeps tea hot long. It keeps my ice drinks cold. The ice doesn't melt quickly at all. It's leak proof. This tumbler functions just as mention in products details. I mostly handwash my dishes etc. However it is dishwasher safe. It keeps my drinks tasting chilled or hot for long periods of time. Tea or smoothie or ice lemonade. Great tumbler and lovely color and body.