📸 Quick Look (Images)
🇺🇸 USA Buyer Note: Comparing hiking gear helps beginners avoid wasting money. Below is a simple, fast comparison so you can pick what fits your needs.
💰 Current Amazon Price
Price: $43.00 - $32.25
(as of Dec 17, 2025 15:57:39 UTC –
Details
)
⚖️ Quick Comparison
| Best For | Beginner hikers, day hikes, weekend trips (USA) |
| Value | Great value vs. similar Amazon options |
| Comfort | Designed for long walks and trail use |
| Durability | Suitable for common U.S. hiking conditions |
| Ideal Use | Parks, local trails, national parks, travel hikes |
🆚 How It Compares
- Vs. cheaper options: often better comfort + longer lifespan.
- Vs. premium options: similar core features, usually lower cost.
- For beginners: easier setup and fewer “extra” features you don’t need.
📝 Product Details
Run fast, filter faster. The UltraFlask+ Filter Cap threads seamlessly 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. Care: Avoid freezing filter. Freezing may ruin the hollow fiber membrane. If in freezing conditions we recommend you keep the filter in your pocket or near your body to prevent freezing. *Effectively removes common waterborne bacteria, such as E.coli (99.999%) and parasitic cysts (99.9999%) per HSF 42. Included in the package: – 42MM Filter Flask Cap – Bite Valve – BackFlush Adapter – Filter Manual – Basic Care & Use Instructions Specifications: – Cap Size: 42 mm / 1.65 in – Dimensions: 115 mm / 4.5 in – Weight: 36 g / 1.3 oz – Material: Silicone POM, Hollow Fiber, ABS
FAST & SAFE FILTRATION: The integrated filter removes Escherichia coli bacteria, Cryptosporidium parvum cysts, and Giardia Lamblia from approximately 1,500 liters of water at a rate of >1L per minute.*
LIGHT AND COMPACT: Minimal design and lightweight materials make this filter the ideal choice for runners. It takes up no extra space when stored or threaded directly onto a flask.
HIGH-FLOW: Easy to drink bite valve auto-seals after each sip, eliminating annoying drips.
COMPATIBLE: Perfect for trail running or backcountry water filtration. Works with all 42mm opening HydraPak products including running flasks, Seekers and Flux bottles.
INCLUDED BACKFLUSH ADAPTER: Plugs into filter valve and threads onto a HydraPak Stow or bottle of clean water for backflushing the filter to restore its flow rate.
⭐ Summary (Why We Recommend It)
Customers say
Customers find the water purification cap effective, with one mentioning it saved them in the backcountry. They appreciate its functionality, with one customer noting it works well with hydra flask collapsible water bottles.
- ✔ Beginner-friendly (no learning curve)
- ✔ Strong value for money (Amazon USA)
- ✔ Comfortable for day hikes & weekend trips
- ✔ Good choice for most U.S. trail conditions
👉 Check Today’s Price on Amazon
❓ Quick FAQ
Is this good for beginners?
Yes. It’s a practical pick for first-time hikers who want dependable gear without overspending.
Who should buy this?
- • New hikers building a starter kit
- • Budget-focused shoppers in the USA
- • Anyone wanting reliable gear for trails and parks
Affiliate Disclosure: hikingdeal.com participates in the Amazon Services LLC Associates Program. Prices and availability are subject to change.
