Katadyn BeFree AC Water Filter (0.5L) vs MSR Thru-Link Inline Microfilter
Weight and specs compared for 2026 — and which one to choose.
New-for-2025 2-stage filter: 0.1 micron hollow fiber + removable activated carbon. 2L/min flow, 1000L capacity, improved taste.
Full details →Inline 0.2-micron hollow-fiber filter with activated carbon that integrates into hydration reservoirs for on-the-move filtering.
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Katadyn BeFree AC Water Filter (0.5L) vs MSR Thru-Link Inline Microfilter: which should you buy?
If saving weight is your priority, the MSR Thru-Link Inline Microfilter wins — at 70 g it is 2 g (3%) lighter than the Katadyn BeFree AC Water Filter (0.5L) (72 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest hygiene page, or browse the full gear weight database.