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UltraFlask™+ Filter Cap

UltraFlask™+ Filter Cap - Main image
$25.8 $43 In stock

Category: Accessories

Run fast, filter faster. The UltraFlask+ Filter Cap threads seamless onto all of HydraPak’s 42mm running flasks and handhelds for a lightweight, straightforward filtration solution. Featuring a traditional bite valve and cap design, runners can drink freshly filtered water directly through the high-flow Blaster valve.

FILTER FACT SHEET | FILTER USER MANUAL

*Effectively removes common waterborne bacteria, such as E.coli (99.999%) and parasitic cysts (99.9999%) per HSF 42.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Grace X. ★★★★★

I used to carry a heavy filter bottle on trail runs, but this cap threads right onto my existing flask and saves me a ton of weight. The filter works fast enough that I can drink straight from a stream without slowing down much.

Isabella ★★★★★

First few runs with this filter cap and I’m impressed—the water flows fast enough that I don’t have to suck hard, but it still keeps grit out of my mouth.

Mia ★★★★★

Swapped this cap onto my 42mm flask before a trail half and didn't touch a single stream crossing the whole race. The threading is tight with zero drips, which I was honestly worried about. Filtering on the move feels effortless now.