MSR Hyperflow Microfilter Climbing so we left them out

so we left them out

Long-zip end opening allows rapid entry so you can minimize the number of micro guests

50% Polyester

considering it’s 10% lighter yet just as durable as before

Made from our Merino 250 Next-to-Skin fabric

MSR Hyperflow Microfilter Climbing so we left them outThe HyperFlow microfilter utilizes the latest Hollow Fiber Technology and our most advanced engineering to make water treatment so small and so easy to use, it will change the way you travel in the backcountry. Its ergonomic design, diminutive size and tool free maintainability make it just as appropriate on day trips as it is on multi day excursions. Add a filtration rate of 3 liters per minute and you've got the most efficient microfilter ever