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HydraPak UltraFlask Speed 600ml vs MSR TrailShot

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

HydraPak UltraFlask Speed 600ml is the lighter option — 84 g lighter than the MSR TrailShot (60% less weight). If grams matter to you, that is the one to beat.
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Spec HydraPak UltraFlask Speed 600ml MSR TrailShot
Weight 57 g · 0.057 kg · 0.13 lb 141 g · 0.141 kg · 0.31 lb
Brand HydraPak MSR
Category Hygiene Hygiene
HydraPak UltraFlask Speed 600ml
57 g

Soft-sided water bottle at 2 oz (57g) designed for running hydration vests and ultralight backpacking with collapsible design.

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MSR TrailShot
141 g

Pocket-sized squeezable water filter. Fast flow rate.

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HydraPak UltraFlask Speed 600ml vs MSR TrailShot: which should you buy?

If saving weight is your priority, the HydraPak UltraFlask Speed 600ml wins — at 57 g it is 84 g (60%) lighter than the MSR TrailShot (141 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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