Katadyn BeFree AC Bottle 0.5L vs Sea to Summit Wilderness Wash 100ml
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
Full details →Biodegradable all-purpose soap for use near waterways.
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Katadyn BeFree AC Bottle 0.5L vs Sea to Summit Wilderness Wash 100ml: which should you buy?
If saving weight is your priority, the Katadyn BeFree AC Bottle 0.5L wins — at 72 g it is 48 g (40%) 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.