Millbank-Style Water Filter Bag, Pre-Filter for Any Water Source (Helikon-Tex)

Step one of safe water in the field. Based on the legendary Millbank bag used by the British Army, this pre-filter handles the first crucial step: clearing sediment and debris before chemical or boil treatment.

Why it belongs in every kit

• Pre-filters any water source, pond, stream, puddle
• Removes particulates that clog modern filters and make boiling less effective
• Compact, packable, near-weightless
• Pairs with any chemical, UV, or boiling treatment for safe drinking water

How to use it

1. Soak the bag (works better wet)
2. Fill from your source
3. Hang and let gravity do the work
4. Treat the filtered output (boil, tablets, or UV purifier)

Who it's for

• Bushcrafters, hikers, hunters
• Bug-out bags and 72-hour kits
• Anyone whose water backup plan needs an upgrade