HydraPak UltraFlask Speed 600ml vs LifeStraw Peak Squeeze Filter
Weight and specs compared for 2026 — and which one to choose.
Soft-sided water bottle at 2 oz (57g) designed for running hydration vests and ultralight backpacking with collapsible design.
Full details →Compact squeeze/gravity filter at 3.9oz. 2,000 liter filter life.
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HydraPak UltraFlask Speed 600ml vs LifeStraw Peak Squeeze Filter: which should you buy?
If saving weight is your priority, the HydraPak UltraFlask Speed 600ml wins — at 57 g it is 53 g (48%) lighter than the LifeStraw Peak Squeeze Filter (110 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.