Katadyn BeFree AC Bottle 0.5L vs Katadyn BeFree AC Water Filter (0.5L)
Weight and specs compared for 2026 — and which one to choose.
Ultralight collapsible water filter bottle with activated carbon. Removes tannins and improves taste. Fits running vests and ultralight daypacks
New-for-2025 2-stage filter: 0.1 micron hollow fiber + removable activated carbon. 2L/min flow, 1000L capacity, improved taste.
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Katadyn BeFree AC Bottle 0.5L vs Katadyn BeFree AC Water Filter (0.5L): which should you buy?
On weight these two are identical (72 g), so your decision comes down to features, fit and price. Check the full details and current price for each above.
See where both rank against everything else in this category on the lightest hygiene page, or browse the full gear weight database.