Katadyn BeFree 1L vs Platypus GravityWorks 4L

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

Katadyn BeFree 1L is the lighter option — 107 g lighter than the Platypus GravityWorks 4L (66% less weight). If grams matter to you, that is the one to beat.

Spec	Katadyn BeFree 1L	Platypus GravityWorks 4L
Weight	56 g · 0.056 kg · 0.12 lb	163 g · 0.163 kg · 0.36 lb
Brand	Katadyn	Platypus
Category	Hygiene	Hygiene

Katadyn BeFree 1L

56 g

Lightweight collapsible water filter bottle. 1L per minute.

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Platypus GravityWorks 4L

163 g

Gravity-fed water filter system for camp use.

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Katadyn BeFree 1L vs Platypus GravityWorks 4L: which should you buy?

If saving weight is your priority, the Katadyn BeFree 1L wins — at 56 g it is 107 g (66%) lighter than the Platypus GravityWorks 4L (163 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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