I'm looking at selling my Hyperflow Water Filter. It was purchased new approximately 6 months ago at River Sports Outfitters here in Knoxville. I've used it on 4 or 5 backpacking trips and and some day trips. I have always followed proper procedures when back-flushing as well. It's a handy little water filter, but I'm cutting down on weight and I really like putting strange chemicals in my body so I'm going to switch to Aquamira. If you have any questions please contact me, I'm asking $75 OBO.
You can find more details and information about the product on the MSR/Cascade Designs website. http://cascadedesigns.com/msr/water-...filter/product