MSR HyperFlow Ultralight Water Filter | Fast Backcountry Purification

Meet the MSR HyperFlow Ultralight Water Filter

Designed for backcountry explorers who value speed, reliability, and a compact footprint, the HyperFlow blends advanced hollow-fiber filtration with a featherweight frame. Its streamlined form disappears in a daypack, returning as clean, ready-to-drink water when you need it most on the trail.

Powerful performance you can carry

The HyperFlow delivers a brisk filtration pace—more than 3 liters per minute, or roughly one liter every 20 strokes. The hollow-fiber element is engineered to meet NSF Protocol P231, removing 99.9999% of bacteria and 99.9% of protozoa across the cartridgeull life, even in challenging water sources. This combination aims to reduce wait times so you can keep moving toward your next campsite or viewpoint.

• High flow rate: pump more than 3 L/min or 1 L per 20 strokes
• Hollow Fiber filter meets NSF Protocol P231: removes bacteria and protozoa across the filter life
• Ultralight and compact: easy to carry on day trips or multi-day excursions
• Quick Connect bottle adapter: filters directly into MSR hydration products and wide-mouth containers
• Field maintenance: seals and replacement cartridges available separately
• PFAS-free DWR storage bag: environment-friendly, keeps gear dry
• Lightweight build: 7.8 oz (221 g), 7x3.5 in; Made in the USA

Small, smart design for real-world trails

Weighing just 7.8 oz and measuring 7x3.5 inches, HyperFlow slips into tight pockets and pack corners without adding bulk. Its design emphasizes practical field maintenance, so you can refresh your water with confidence on overnight trips or longer expeditions.

The Quick Connect bottle adapter expands versatility by letting you filter directly into MSR hydration gear and other wide-mouth containers, simplifying your river crossings and campground fills.

Environmentally mindful storage and care

The included storage bag features a PFAS-free DWR coating, helping keep gear dry while aligning with an eco-conscious approach to travel gear. A basic maintenance routine—keeping seals clean and swapping cartridges when needed—helps sustain smooth performance in the field.

Note: The benefits described reflect the product features and engineering details provided by the data. Real-world results depend on water quality, usage, and environmental conditions.