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Klentax Water Filter Bottle

Sale price £44.00 Regular price £88.00
0.1-Micron Hollow-Fibre UF Membrane
1000ml Collapsible Flexible TPU Flask
Silicone Bite Valve & Protective Dust Cover
BPA-Free with Anti-Loss Wrist Lanyard
Packets

Limited time offer

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The Modern Solution

Introducing Klentax

A clever 1000ml collapsible soft flask with an ultra-fine 0.1-micron hollow-fibre filter for instant, safe drinking water wherever your adventures lead.

Without Klentax

  • Hauling heavy, rigid water bottles that weigh down your rucksack
  • Waiting 30 minutes for chemical purification tablets that taste unpleasant
  • Risking stomach illness from untreated lake, river, or tarn water
  • Fumbling with bulky hand pumps, hoses, and fragile separate components

With Klentax

  • Filters bacteria, protozoa, and fine sediment instantly at 0.1-micron precision
  • Collapsible 1000ml soft flask flattens completely to save rucksack space
  • Effortless squeeze-to-drink flow via comfortable silicone bite valve
  • Zero batteries, mechanical pumps, or chemical wait times needed
Ultra-Fine Filtration
0.1-micron hollow-fibre membrane
Collapsible Flask
Flattens when empty
Fast Hydration
Instant squeeze flow
Outdoor Filtration

Why Klentax Is Your Essential Trail Companion

Turn natural UK freshwater streams, tarns, and taps into clean, refreshing drinking water in seconds.

0.1-Micron UF Membrane

Advanced 0.1-Micron Pure Filtration

Equipped with an advanced 0.1-micron hollow-fibre ultrafiltration membrane that helps trap bacteria, protozoa, sediment, and micro-particles from British streams, tarns, and rivers.

  • 0.1-micron hollow-fibre ultrafiltration
  • Filters bacteria, protozoa, and fine sediment
  • Transparent housing for quick visual checks
Collapsible TPU Body

1000ml Collapsible Soft Flask

Holds a generous 1000ml of hydration when full, yet flattens and rolls down into a pocket-sized package when empty. Ditch bulky, rigid water bottles that clutter your hiking pack.

  • Generous 1000ml water capacity
  • Collapses flat when empty to save space
  • 100% BPA-free durable food-grade TPU
Effortless Squeeze Flow

Squeeze-to-Drink Silicone Valve

No hard sucking or hand pumping required. Simply bite the soft silicone valve and gently squeeze the flexible flask for smooth, instant drinking flow wherever you are on the trail.

  • High-flow silicone bite valve
  • Protective dust cap guards mouthpiece from grime
  • Wide-mouth opening simplifies refills and cleaning
Trail Convenience

Trail-Ready Anti-Loss Design

Designed for active trail use with an integrated anti-loss wrist lanyard and secure screw-top seal. Perfect for fell runners, backpackers, cyclists, and wild campers seeking lightweight gear.

  • Anti-loss wrist lanyard for fast handling
  • Zero batteries, cords, or chemical additives
  • Lightweight build reduces rucksack burden
Instant Hydration

Drink Pure Water in 3 Easy Steps

Purify freshwater from mountain streams and lakes in three quick, effortless steps.

1

Fill the Soft Flask

Scoop fresh water from any natural stream, river, lake, or tap through the generous wide-mouth opening.

2

Screw on the Filter Cap

Securely screw on the 0.1-micron hollow-fibre filter cap to create a watertight, leak-proof seal.

3

Squeeze & Sip

Unclip the dust cover, bite down gently on the silicone valve, and squeeze the flask for instant, filtered refreshment.

Seconds
to scoop, filter, and drink fresh water
Comparison

Why Choose Klentax?

See how Klentax provides pure, instant hydration outdoors without cumbersome bottles, heavy pumps, or unpalatable chemical tablets.

Scroll to compare
Feature
Klentax Filter Bottle
Rigid Filter Bottles
Chemical Tablets & Pumps
Hydration Speed Instant (Squeeze & Sip) Slow Suction / Hard Sip 30+ Mins Wait Time
Filtration Precision 0.1-Micron Hollow-Fibre UF Standard Carbon (0.2–2μm) Chemical / Basic Screen
Collapsible 1000ml TPU Soft Flask
Bacteria & Protozoa Removal
Protective Dust Cap & Silicone Bite Valve
Packability & Weight Heavy / Rigid Plastic
Packed Volume Flattens completely empty Bulky fixed 1L container Bulky pump kits & bottles
99.99%

Bacteria & protozoa filtration

0.1 μm

Hollow-fibre membrane pore size

1000ml

Capacity in lightweight soft flask

4.9 out of 5 based on 1,428+ verified UK hikers & campers

Loved by Over 15,000+ UK Explorers

"Took Klentax on a multiday hike across Scafell Pike. Filled straight from mountain becks without a second thought. The squeeze flow is brilliant, the water tasted crisp and fresh, and it rolls up to nothing in my rucksack!"

O
Oliver B.
Ambleside, Lake District Verified Purchase

"An absolute game changer along the Cairngorms trails. No more lugging three litres of heavy water up steep ascents. You just scoop from a clean burn, squeeze, and drink. The silicone valve and dust cap work brilliantly."

F
Fiona M.
Aviemore, Highlands Verified Purchase

"Fantastic bit of kit for trail running and wild camping. The 1000ml flask fits easily into my running vest and collapses down as I drink. Clean, crisp water without any bitter chemical tablet taste. Highly recommended!"

D
David W.
Betws-y-Coed, Eryri (Snowdonia) Verified Purchase
4.9
1,428+ Reviews
98% Recommend
Top Outdoor Gear 2026

30-Day Money-Back Guarantee

Take Klentax on your next British outdoor expedition with absolute confidence. If you are not entirely satisfied with its filtration performance, ease of use, or build quality, return it within 30 days for a full UK refund. No hassle.

No Questions Asked
Full UK Refund
Hassle-Free Returns
FAQ

Frequently Asked Questions

Everything you need to know about pure, safe outdoor hydration with the Klentax Water Filter Bottle.

Ready to Drink Safe, Pure Water Wherever You Roam?

Join thousands of UK hikers, fell runners, wild campers, and adventurers who stay hydrated with Klentax. Order now and enjoy your limited-time 50% discount.

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Free UK Delivery
30-Day Money-Back Guarantee
4.9/5 UK Customer Rating