Katadyn BeFree 1L vs MSR Guardian Purifier Pump

Weight and specs compared for 2026 — and which one to choose.

Katadyn BeFree 1L is the lighter option — 434 g lighter than the MSR Guardian Purifier Pump (89% less weight). If grams matter to you, that is the one to beat.

Spec	Katadyn BeFree 1L	MSR Guardian Purifier Pump
Weight	56 g · 0.056 kg · 0.12 lb	490 g · 0.490 kg · 1.08 lb
Brand	Katadyn	MSR
Category	Hygiene	Hygiene

Katadyn BeFree 1L

56 g

Lightweight collapsible water filter bottle. 1L per minute.

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MSR Guardian Purifier Pump

490 g

Military-grade water purifier removes viruses, bacteria and protozoa.

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Katadyn BeFree 1L vs MSR Guardian Purifier Pump: which should you buy?

If saving weight is your priority, the Katadyn BeFree 1L wins — at 56 g it is 434 g (89%) lighter than the MSR Guardian Purifier Pump (490 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.

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