Simply Pure Hydration Purist 23 Oz Insulated Water Bottle with Fixy Cap Sport Bottle - Stays 20% Colder Than Other Insulated Bottles (Silver, Fixy)

Can't really tell a difference from my Camelbak bottles. It keeps it cold as described, but I have not tested the duration myself. The hot/humid Georgia weather causes the ice to melt pretty fast in both bottles (Camelbak and Specialized bottle, i.e. purist bottle). One major up side is that the Fixie cap is a lot easier to clean then the Camelbak cap.

Love the Purist bottles, but the fxxy cap is better for me when running. I find it a little harder when cycling, never realized that when I toss my water bottle up, I bite the cap and adjust my grip. This doesn't allow for that as much. Great flow, love the heart valve.

It stays clean, it keeps liquid cool; what more do you want?

I've only used it on a couple of trips but after a 10.5 mile ride, my water remained "cool". Best of all, the water had not plastic taste or smell. That was a big plus.

better than the camelbak bottles for keeping liquid cold or warm but the cap is better on the camelbaks.

I got this to take on long bike rides. It does not keep water as cold as I had expected, but I love the butterfly cap. Squeeze and squirt works great.

I love this bottle it keeps my water cool.

The rubber flaps the controls the flow of water is now ripped. Not durable as my camelbacks and has taste.