I notice it does take a little while to break in to fit regular water bottles appose to the elite water bottles which are a little slimmer. Other than that, no complaints. Love the looks of them.
I purchased two of these for my gravel bike, and will typically ride with 24oz bottles on longer rides. Even in bumpy conditions and on rides on singletrack, these kept the bottles in place while still allowing for easy access.
I've seen some reviews that said these cages were too tight. I haven't found that to be the case using Elite Fly bottles, but I haven't tried with other brands.
Holds bottles very securely. However, if you're using Camelbak Podium bottles, they can be difficult to get in and out of the cages because of their shape. Stick with straight-sided bottles for best results.
I know it's not as fancy as some of the carbon cages out there, but it's still super light and I've never lost a bottle. The price is right too, and if it's good enough for the pros it's good enough for me.