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LifeStraw Peak Series Collapsible Squeeze 650ml vs SteriPen Adventurer Opti

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

SteriPen Adventurer Opti is the lighter option — 10 g lighter than the LifeStraw Peak Series Collapsible Squeeze 650ml (10% less weight). If grams matter to you, that is the one to beat.
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Spec LifeStraw Peak Series Collapsible Squeeze 650ml SteriPen Adventurer Opti
Weight 100 g · 0.100 kg · 0.22 lb 90 g · 0.090 kg · 0.20 lb
Brand LifeStraw SteriPen
Category Hygiene Hygiene
LifeStraw Peak Series Collapsible Squeeze 650ml
100 g

Ultralight collapsible water filter bottle at only 3.5 ounces.

See it in your base weight → Full details →
SteriPen Adventurer Opti
90 g

UV water purifier. Purifies 1L in 90 seconds.

See it in your base weight → Full details →

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LifeStraw Peak Series Collapsible Squeeze 650ml vs SteriPen Adventurer Opti: which should you buy?

If saving weight is your priority, the SteriPen Adventurer Opti wins — at 90 g it is 10 g (10%) lighter than the LifeStraw Peak Series Collapsible Squeeze 650ml (100 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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