I love the wide mouth Nalgenes because they're so easy to fill up and add ice to. However, they're difficult for me to drink from when I'm walking or in a moving car. This sipper is very convenient and makes drinking on the move easy. However, it doesn't seem to fit quite right because it's very easy for it to fall into the bottle. The little tab is also not the easiest to grab to remove it. I do like that it is dishwasher safe.I've tried off-brand versions that I liked better.

Great for wide-mouth Nalgene bottles (now I don’t spill all over myself)! Only complaint is that over time, the guard slips a little deeper down the bottle’s mouth and into the bottle. I’ve been using for months though and it’s never fallen into the bottle so not a con in my opinion!

I was pissed like the other lady thinking this would fall right in the bottle as it looks dinky. But when I was taking photos to write a scathing review, I found it actually does fit the wide mouth 32 oz bottle, small as it looks. Haven't tried it out yet so I can't say how well it works yet

This simple plastic disk remedeed all of my drinking problems caused by the wide-mouthed nalgene.Now I can drink while driving, walking, or laying down. It is easy to install and remove, so I have no problem filling the bottle with ice.

I have been going back and forth about whether I prefer the wide-mouthed or narrow-mouthed Nalgene bottles. The wide-mouthed ones are much easier to clean and you don't need special ice trays to make ice that fits in them. However, I have a tendency to spill the liquid from the wide-mouthed bottles. I bought this lid, thinking it would help.First off, this fits pretty well into a 32 oz Nalgene wide-mouthed bottle. You just set it inside the rim and push it into place (fill the bottle with your…