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Grayl GeoPress vs Platypus GravityWorks 4L
Weight and specs compared for 2026 — and which one to choose.
Platypus GravityWorks 4L is the lighter option — 287 g lighter than the Grayl GeoPress (64% less weight). If grams matter to you, that is the one to beat.
Grayl GeoPress
450 g
Water purifier bottle at 450g. 710ml capacity with advanced filtration technology for pathogen and chemical removal.
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Grayl GeoPress vs Platypus GravityWorks 4L: which should you buy?
If saving weight is your priority, the Platypus GravityWorks 4L wins — at 163 g it is 287 g (64%) lighter than the Grayl GeoPress (450 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.