Love it. This his what I was missing.

the soft rubber part on the spout did not hold up very well. it attracted mold growth and after scrubbing and sanitizing frequently the study rubber started to fall off. after physically removing all of the soft parts the lid was still usable with the remaining hard plastic spout.

Fits the 64oz sweat rush bottle perfectly.

Ordered to replace one that leaked. I assumed it was just old however the new one still leaks.

Fits my Costco bottle.
Gave one to my hiking partner, she loves it too.

The flip lid and straw work just as expected.

I've tried the other lids that fit the Monoprice water bottles and these have been the best so far.

Cutting the straws to-size for each of my 18, 32, or 64oz bottles, makes drinking large quantities of water so much easier.

The water is staying cool during my work-day and the convenience of these lids makes it so easy; I've definitely noticed I'm drinking more water as a result.

I typically have the 64oz sitting on my desk so it's convenient to flip this lid up and drink without having to hoist that big bottle overhead (which requires two hands just to grip it). With the straw cut-to-size, I can the bottle sitting on my desk and I empty the bottle pretty rapidly. I haven't had any issues with flow-restriction using this top since there is also an air-intake hole.

The other lids aren't as convenient (particularly with the 64oz!). You have to tilt the bottle to get the water to pour out. That's annoying when I'm in my car with the fairly-tall 32oz too. I'm pretty tall so with the bottle tilted upwards I hit the roof of the car pretty easily. I end up trying to contort myself so I can drink the last of the water (or I stick the bottle out of the sunroof!).

The lighter 18oz I take on jogs but the sippy-cup works well to parch my thirst quickly. Great bottles and this lid makes them MUCH better!

I am pleasantly surprised by this item. It works perfectly on the three wide mouth bottles that I purchased from Monoprice.

It’s very hot here in Arizona, so I fill my bottle with ice and use this lid daily. The only suggestion for improvement is when the bottle with ice is on it’s side, there is “sweat” on the lid. It doesn’t leak but is does sweat so I have to keep it away from my electronics.

Made the wide moth bottle awesome

Just what I needed!