REI.Com - Camping Water Filters

"At REI, we love to get outside and play, and we know first-hand the importance of quality outdoor gear. We stand behind all our products with a 100% satisfaction guarantee, and we design our own line of award-winning REI brand gear and clothing. Whether you're new to outdoor adventure or a seasoned pro, we gladly share our enthusiasm for our products—and the trails, slopes and waterways where we play."

You'll be blown away by how fast you can fill a water bottle with the MSR HyperFlow™ water filter.

Backpacker April '08: ''The HyperFlow is so fast and light it converted several editors who had sworn off
filters in favor of chemical treatment.''
Hollow fiber technology offers an extremely high flow rate of 2.75 liters per minute
At just 7.8 oz., the HyperFlow is the lightest, most compact pump filter created by MSR
Filter physically removes particles, protozoa, and bacteria down to 0.2 microns in size, including giardia, salmonella, cryptosporidia and others
Pump is fully field maintainable and does not require tools for complete disassembly
Included Quick-Connect™ bottle cap interfaces with MSR hydration products, Nalgene bottles and other containers with 63mm threaded openings
Quick-Connect™ cap allows the pump to attach directly to the bottle or hydration bladder for the most convenient filling
Included prefilter attaches to the end of the intake hose and blocks larger contaminants from entering the microfilter
Prefilter floats near the surface of the water to avoid intake of contaminants located at the floor of your water source
Over-molded end caps on the pump provide an excellent grip and pumping comfort
Adapt the HyperFlow pump into a pump-free gravity filter with the HyperFlow Gravity kit, sold separately
MSR has identified and fixed a flow rate issue affecting some cartridges in MSR HyperFlow microfilters.

Official website www.rei.com