Very easy to use and not have to pour powder mixes into water bottle. Adjustable flavor lets you pick the intensity of the flavor. I enjoy a setting of 3 and have been through seven bottles on a single flavor cartridge yet. Only putting water in the bottle to refill is great and keeps the bottle clean.

This is the best product for a lot of reasons but here are just a few. It's worth the money due to the fact that refill cartridges are cheap but good flavors. Helps reduce the use of plastic bottles. You can recycle the cartridges that you use for free at no charge to you. Depends on how much flavor you want but 1 cartridge can last you 1 month on the setting of 2 or 3. I love it, plus I add real fruit to mine. I recommend getting this product!!

definitely don't sit on this I work from home person very busy I literally don't drink water at all but this thing right here you don't even realize how much water you're drinking I feel this bottle at least six times in 8 hours so good for getting your water in that's just in my 8 hours of work one cartridge will probably last you 5 days highly recommend

It’s an awesome cup and all but what no one tells you and you have to do a Google search to find this out is how hard you have to suck to get water out of it also the flavors seem to be made with Splenda sugar and have that weird after taste that I’m not fond of other than that love the concept of the cup and my hats off to the creator amazing idea genius honestly

This is so easy you just pour your water in and boom twist on the flavor cartridge and you’re good to go. At first all ai needed was to set it on a lvl 3 and it was a mild but good flavor but after filling the bottle 2-3 more times now ai have to set it in a 5-6 to get any much flavor out. Not sure yet if this will be more cost effective just have to wait and see how often each cartridge lasts.

I couldn’t find anywhere in the box that demonstrated instructions. In all honesty, I probably should have quit being frustrated and just gone and looked online (fwiw, my neighbor owns and loves one and SHE would have been a big help)! Anyway , I don’t know if mine just came instructions free, or not, but I eventually got it to work. The only downside for me is that it contains Sucralose/Splenda; not my favorite. But if this gets me to drink more water, I truly can’t complain!!!

In an effort yo get my lobed ones to frinkore water and add some essential vitamins and minerals to their diets, I bought eceryone on my Christmas lift a Cirkul this year. I am sold on the Cirkul bottles and how well they are made. I couldntvbevhappier with this product.

Absolutely love this bottle. Would never have bought it if it has not been half price v

These are amazing. They keep things cold. I love the stainless steel.

I have wanted a Cirkul for awhile. This price made me purchase due to it being a great price.