Katadyn BeFree 1L vs Sea to Summit Wilderness Wash 100ml

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

Katadyn BeFree 1L is the lighter option — 64 g lighter than the Sea to Summit Wilderness Wash 100ml (53% less weight). If grams matter to you, that is the one to beat.

Spec	Katadyn BeFree 1L	Sea to Summit Wilderness Wash 100ml
Weight	56 g · 0.056 kg · 0.12 lb	120 g · 0.120 kg · 0.26 lb
Brand	Katadyn	Sea to Summit
Category	Hygiene	Hygiene

Katadyn BeFree 1L

56 g

Lightweight collapsible water filter bottle. 1L per minute.

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Sea to Summit Wilderness Wash 100ml

120 g

Biodegradable all-purpose soap for use near waterways.

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Katadyn BeFree 1L vs Sea to Summit Wilderness Wash 100ml: which should you buy?

If saving weight is your priority, the Katadyn BeFree 1L wins — at 56 g it is 64 g (53%) lighter than the Sea to Summit Wilderness Wash 100ml (120 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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