Right, ohhh, where to start.
I dont like Chinese goods. I dont like fakes. I dont like people ripping off others designs.
However....
A while back I got into a debate via PM with someone about all the above. Long story short, I bought one of those water filters.
Result?
Actually, it's not bad kit at all. It DOES clog quite quickly, but then it doesn't half remove some serious crud from the water. It takes seconds to clean though, so no biggy.
With performance, well, I had a family friend who may or may not work for a Government agency that takes a close interest in water, enviromental and protection, ahem, run a lab test for me.
Seems the filter put out water that quality far exceeds that which comes down my tap in my kitchen!
I got mine for £24 delivered. Happy indeed. I use it on my bum bag with a collapsable cup when I'm out on a training run near some woods to me, and I know I'll want to stop and have a drink after a few miles. It's the size of a glasses case, weighs nothing, and works. Rest of the time it lives in my emergencies bag with my Millbank bags.
All in, recommended