Price history at GRAYL
Price at GRAYL unchanged at $7.95 since Oct 9, 2026. Last checked Nov 2, 2026.
Product Description
Give your UltraPress® a boost! Add a One-Way Valve to make it possible to add electrolytes, drink mixes into an UltraPress for fast, healthy water when on-the-go. Note: an UltraPress® One-Way Valve now ships pre-installed in every UltraPress.
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