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I bought this from Amazon a few months ago, so it's had some mileage on it.The pros are:the insulation is superb, it never sweats.Cons:It''s kind of hard to grab (and I have big hands) unless you go for the bottom (but then it's unbalanced and hard to hold.) There is probably no fix for this, given the design fits my car holder and others don't.The hole is dual-purpose (drink directly or straw,) so it leaks if you tip it too far with the straw in it or knock it over. Also, the part of the hole that receives the straw is too large, and the straw can be removed despite the ring of metal on the bottom to prevent this.The worst problem shows up after a few months of use. It's a push-on top, which is convenient, but the seal is made with rubber rings and is basically a press fit. Once the rings wear enough if you tip the thing over when it's full, the top pops off, resulting in a lot of blue language first thing in the day. I am pleased enough with it to order replacement tops, though, if they're available.

I bought this after seeing that it was basically the highest rated one on Amazon, after filtering the reviews through Fake Spot.After about 32 hours, the Ozark Trail tumbler had about 9 ounces of water and the Frosti had about 12 ounces, so the Ozark Trail won.However, they were virtually identical all the way up to roughly the 16 to 18 hour mark.The lid on the Frosti is much nicer. The mouth opening is a bit wider and it goes down deeper into the drink, so it is less likely to come off.All and all, this is doesn't perform as well as Ozark Trail after about 18 hours, but it will probably have identical performance for 99% of the users out there.The straw is very nice, also.

Okay, so this is my 2nd review bECAUSE THIS PRODUCT IS THE BOMB !!!! Going to reorder for the family. It doesn't sweat. I does keep water cold and ice cubes solid for a 7 hours-in-the-car-in-the -Texas-sun day (over 100 degrees inside hte car) . Why pay twice as much for that other brand??? Oh, and the delivery time was super sonic speed, and the customer service is incredible (and will make you smile). WHAT IS NOT TO LOVE?! :) (4 days later): Okay , so if you fill the tumbler with a full tray of ice, and leave it in your car on a 100+ degree Texas day, THE WATER WILL STILL BE COLD AND THERE WILL STILL BE ICE CUBES VISIBLE!!! The tumber itself was hot on the outside, but it wasn't a problem. WOOOO HOOOOOOOOOOOO !!! I just ordered 2 more. :)

Water tastes Better! I had been looking for a stainless cup for a while - but some of the prices were outrageous! The price on this cup is great, it comes with a stainless straw too and a lid. The lid is plastic and it fits perfectly - very snug! It is double walled, so the cup doesn't sweat or get too cold. And it keeps water cold for HOURS!! I wish it had a handle, but i think you can buy something separately that fits it.Best part -- water actually tastes better in it. I was using a BPA free plastic "Bubba" brand cup prior -- but the water got warm too quick and didn't taste as good. I drink more water with this cup - LOVE IT!

Keeps my water super cold, and I love that it's bigger than 16 or 20oz. I used to have to keep getting up from my desk at work to refill my old cup.Two drawbacks:1. The material looks dirty a lot- fingerprints all over it. Maybe a plastic coating would work on this product well.2. It is loud! The straw bangs around against the inside of the cup and makes a lot of noise. Ice does the same thing. Any cup will have some noise, but I'm pretty sure my coworkers across the office can hear this cup when I move it at all!All of that being said, I'm still happy with it. The biggest thing is that it's so large!

If I could give this 10 stars I would. This is literally the best cup I've ever owned. I put a good amount of ice in (maybe about half-way) in the morning (maybe 8am) and I still have ice at 5pm! One time I put ice in at 5pm, and there was still ice in the morning! Really. It keeps your water so frigidly cold. It holds 30 oz, which is great, is dishwasher safe, has a lid, fits in my car cup holder, and the metal straw is fantastic as well. One more thing about the ice-- if you are refilling your cup with warm tap water all day, your ice likely won't last as long. I re-fill mine from a water cooler, so I do think that probably helps.

I love this big ol' cup. My mom and brother have a few other name brand cups that do the exact same thing as the Frosti, only they paid much more.I don't like my drinks loaded with tons of ice, but this still keeps it cool and stands up to the Georgia heat when I'm by the pool or anytime outside. Also, I left it in my car for hours in 90+ temperature and it stayed exactly how it was when I first filled it up. So awesome. This has been my favorite go-to cup. Glad I bought this! When cooler weather hits, I will have to buy a smaller one for my coffee to keep it hot.

This cup is unreal! Huge, good looking, fits in your auto cup holder, and, best of all, keeps stuff cold for hours. Recently left it with ice-cubed water in it for 5 hours in a blazing sun and 90+ degree afternoon temps. Thought the cubes would melt and the ice water would be not so icy. WRONG!!! Came back the contents were ice cold, cubes intact. I was really blown away. Assume it works the same for hot fluids. Oh, the straw is excellent too, wide long and never fails.If you're looking for an awesome smoothie cup that hold large amounts, look no further. Frosti rules!