Cirkul is a great brand 
Cirkul is great! Just one cartridge is about four bottles of beverage. That's a good deal.
It is! I can usually stretch it to about 6 or more bottles,
I like that it is infused with B vitamins and electrolytes to keep you hydrated.
Yes and some are caffeinated to keep you going during the day 
The only downside is that the bottle can sometimes leak and make a mess.
Agreed! However I haven’t found any leaks, only thing is sometimes when I first open there is water in the lid 
Sometimes there can be some water in the flavor chamber. Try to sip as you tilt the bottle down.
Oh I didn’t know that! I also love that it’s a small business. However recently they’ve had really bad shipping delays 
I think that's understandable given the circumstances of the world.