Bought to replace a normal plastic drinking water bottle, as couldn't cope with warm water in summer months. Also wanted a bottle with a straw, rather than drinking from the bottle, as a lot of cheaper alternatives don't have a straw.
Really pleased with it, extremely sturdy, keeps drinks cold for hours. Took it on a hot walking weekend and it was great to have cold water.
It's not leaked on me (others mentioned it has), just have to make sure the lid is fully fitted/screwed on and tightened.
Has a useful sturdy handle for carrying.
It can feel heavy, but not a problem as more importantly I wanted cold water.
It is pricey, luckily I had a JL gift voucher.
Sturdy, will likely get lots of use out of it.

This is a great product! Keeps ice for over a day, water stays cold. Drink spout is easy to deploy and closes securely. The jug can leak if the lid is not tightly closed, but that would be true of any product. I'm looking forward to really using it this summer when the weather heats up. The 40-oz capacity is a good size, too: enough water for a hot day, but not hugely bulky like some products.

All the negative product reviews on this website are odd. In some cases, the review sounds like it is for an entirely different product. And it would be much more helpful to see reviews from actual REI users as opposed to dozens of comments from Stanley's website.

Don’t get me wrong I LOVE the Stanley products & promote them when I go out. Everyone asks me if they really are worth the hype? I was honest & said the Quencher 2.0 definitely is, but I told them what happened with my ice flow flip top & encouraged everyone to buy anything but this model. I should’ve went w/my gut & bought another Adventure Quencher 2.0 instead of this model. My bottle will be used as decoration only, maybe a vase, but w/my luck it’d tip over. I bought this mode, since 90% of the reviews said it wouldn’t leak - it soaked everything in my purse & a very special tote bag, which had my wallet, (i.e., my money, credit cards,both of my checkbooks + more). A new purse was easily replaced, but the canvas bag wasn’t. inside each bag/purse was SOAKED. I mean everything - SOAKED. I’ll never buy the ice flow flip top again bottle again.

I LOVE this tumbler! I fill it daily with ice then add my protein drink. It keeps my drink very cold all day and the ice slowly melts so I get water the rest of the day. The flip top is great for ensuring no spills and staying clean. The next morning there is still about a cup of ice in the tumbler! I gave only 4 stars because the straw is initially difficult to use with ice - the ice gets stuck to the sides and it is hard to insert the straw because of this. I've tried inserting the straw before adding ice, and the ice won't move so the straw comes off the grommet on the lid when twisting the lid on. I also would love a stainless steel straw option. None of these are game changers for me. I'd buy another in a heartbeat!