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Access potable water anywhere with the HydraPak 42 mm Filter Cap. Ideal for trail running, cycling and backpacking, the cap is compatible with all HydraPak products with 42 mm openings.
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We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
🇺🇸 Ship from USA · On Agora since 2026
$40.00