Had not hear of this filter, so I googled it and found
https://sectionhiker.com/hydroblu-ve...filter-review/
But I was rather disappointed because the article "claims" the filter is better than Sawyer (yet they both use the same technology) and then they engage in deception...
They compare the price of the Hydroblue to the Sawyer SQUEEZE, but then compare the size of the Hydroblue to the Sawyer Mini.
And the price for the Sawyer Mini is $20 at your local Walmart.
Given that you have to pay attention to the color coding to make sure you don't hook it up backwards (something the shape of the Sawyer makes it near impossible to do), I can't say that Hydroblue is any better... just someone who has copied the Sawyer with their own twist. {Imitation is the sincerest form of flattery}.
I will say the one think I've goofed up on the Sawyer is that when it comes to backflushing my Micro, I've occasionally tried to flush it from the wrong end.