The idea is a good one - have cartridges of flavor you easily sip through to change up the taste of your water. But the implementation of the idea didn't work for me, and I returned it. The dial that alters intensity of flavor almost immediately kept producing high intensity flavor even when set at low numbers.

The flavor cap is super potent at first even when dialed back and causes it to quickly dissipate to nothing withing the first 50 to 75% of a fill up. This affected 4/6 of the cartridges so far and have two unused, but because of the the potency at first the other 2 are unused due to the quality control issues and the very potent sour flavor. It's an really expensive water bottle. Do yourself a favor and just pick up a case of water and a few boxes of flavor packets or just get a standard water bottle.

Good alternative to practically any other drink besides plain water, yet I'm not quite sure how I feel about regularly consuming the artificial sweetners used in every flavor... The plastic bottle, lid and flavor cartridges are all of good quality. Flavor delivery can be inconsistent if the lid, or cartridges are screwed on to tightly, and too much pressure builds up inside the bottle.

Cool product in theory poor execution. Does not work well with iced water. The ice will make the flavor inconsistent sometimes needing to be adjusted up or down. I have not been able to put on one setting and enjoy the same flavor amount. Sadly this product is not worth it.

This really gets 3 1/2 stars...yes if you want water with flavor instead of drinking highl sugar beverages this is a plus. My friend says there is an after-taste in the cartridges, I do not taste it. The flavor will run out faster the higher the setting, and the lower setting you taste more of the sweetner than the flavor. I am interested in trying some of the flavors on the website. I will not give up on this product because I think it is a kool idea.

Love this plastic water bottle, I ended up buying my whole family to enjoy. We used to just drink 1-2 bottles of tasteless water a day but now we can’t stop drinking water because of the variety of flavors that is included. I also bought two boxes of the tea variety pack and lifesip B-vitamins variety pack with 8 cartridges inside sold separately. It’s worth buying it. We use it when we go to the gym and easy to carry anywhere you go just enjoying flavorful water! Now I feel hydrated everyday!

Love this water bottle!! My teen daughter has begged for one of these for awhile now & I was finally able to get her this one. I also purchased one for each of my 2 boys ages 8 & 6. They weren’t as thrilled with it but what child really would be crazy about flavored water??? Mine usually aren’t water drinkers anyway!! It’s okay though bc they will have other options and I’ll just keep trying with them. I love the multiple flavors offered and they are all a win in our book!!

Cirkul bottle was not for me. Suction level needed to get water from the bottle was over the top too much, maybe this was because of recent dental work. While the flavors are good the dial did not give consistent flavor according to the level I chose. It was either all flavoring or none at all. I read other reviews to check for suggestions as to why I was having issues, tried the suggestions and the results didn’t change for me. I’m thinking I just got a defective bottle. I will be returning.

Tastes strongly of chemicals and is unpalatable.

Too hard to drink, and if you make it easier it spills.