Cirkul 40oz. Brink Stainless Steel Tumbler with Handle, All-Day StrawSip™, Double-Wall Insulated

excelente

I don't like my new Cirkul 40oz Tumbler, I love it. The flavors are awesome and there is such a good variety of them. Also, I like the enhanced flavors with vitamins and or caffeine, among others. The only thing is I cannot get flavor sipping with the tumbler upright like in the advertisement. I have to tip it up and sip and then I get a flavor "shot" which I wash down with regular upright sips of water. I suppose it works for me just like the plastic bottles. I still like it much better than having to deal with the overly sweet, flavored waters or water flavor packets or drops you get from the store. I also like that you can just drink the water without flavor by turning the flavor dial down to zero. I only want a little bit of flavor like infused water, so I don't mind a lower flavor dial setting, like 3 or 4. You still get quite a bit of flavor at 9. I have filled my 40oz up half with ice and water like, 10 times since I got it, and I am still on the same Honey Crisp LifeSip cartridge. So, I am pretty pleased with how long the cartridges are lasting and how much money I am saving on buying flavored water/diet sodas. Overall, I would recommend this product. As long as Cirkul stays in business, this is a game changer for me as I needed to get away from diet sodas and drink more water. I also got the 42oz regular plastic bottle with a matching chill sleeve directly from Cirkul. I am still waiting for that to arrive, but I am sure I will love it, too. My husband even likes it. So, he is going to be using the free bottle we got from making our first order for drinking with the energy drink sips like InFlow and Fission. If you are looking for a convenient way to increase your water intake and add your customizable flavor, this is product is ideal. EDIT 11/14/2025: I ended up returning this because it became to difficult to get any flavor sipping through the straw. My 42oz. plastic Cirkul bottle works perfectly.

works well, i had issues with the suction at first but then realized that it was just user error, after flipping the little rubber piece on the mouthpiece the suction issue was fixed. Highly reccomend this waterbottle for those who don't like to drink water.

So I read the reviews regarding this product, but it works. I found out a few things when trying to use it. First. You cannot tip or till the Tumblr at all. It has to remain straight. You cannot put a lot of ice in it and it has to stay under the max full line in the inside. I get flavor for the caridge on the lower setting. I don't think that you have to suck any harder than drinking from a normal straw. I like that it stays colder longer. It takes a few times to adjust to using but I think it's worth it.

Its not a STANLEY but it serves the same purpose. I don't like drinking plain water and this is perfect. The lid doesn't let anything drip out if it rolls over. Size is great 40 oz so 2 reg water bottles. If you fill it 3 times you went through one cartridge. I don't like fake or overly processed flavors. so its nice getting just enough and being able to control the amount of flavoring i get. I'm happy with the cartridges for now. I haven't been disappointed yet. I've been drinking considerably more water because of this bottle. Its built really well, so not disappointed. Its hit or miss on the ice retention. you have you balance out ice to water. The bottle actually keeps stuff pretty cool. I'm definitely OK with that. it does fit in most if not all the cup holders i have had to deal with.