Review on Stay Fit And Hydrated With Contigo'S 28Oz Shake & Go 2.0 Shaker Bottle (2 Pack) - Ideal For Bubble Tea & Dragonfruit Lovers! by Nicolai Goler

Functionally, these are very similar to any of the other shaker cups out there, but these do have a few key distinctions:1. These have an enormous 'carabiner' on them which I thought was ridiculous at first but have quickly grown to love. It's really easy to clip this to a backpack strap or other strap when in transport and it's also great for clipping several of these together to bring home from my work desk at the end of the week. The clip did get in the way of my hand a little bit at first but I've learned to push the clip all the way down and just wrap my hand around it and now it's not an issue.2. The agitator ball is a solid piece of plastic that makes WAY less noise than Blender Bottles' wire balls. This is especially noticeable when the bottle is empty or nearly empty. You will still hear the ball fall from one end of the cup to the other when taking a drink, but it's not nearly as loud as a wire ball clanging around which is a huge improvement in my book.As for everything else, it's pretty standard. Everything is dishwasher safe (a must for me) and seals well. I'd definitely recommend picking up some of these!