FiltSipy Water Filter Straw
- 0.01μm hollow fibre membrane removes sediment & particles
- Up to 5,000 litres capacity per straw (10,000L total bundle)
- 28mm dual-thread fits standard bottles & squeeze bags
- Includes 2 blue straws, clips, and lanyards (BPA-free)
Drink safely from any freshwater stream, lake, or tap wherever adventure takes you.
Engineered for British wild campers, hikers, and home emergency kits, the FiltSipy Water Filter Straw ensures instant access to clean drinking water. Featuring a medical-grade 0.01μm hollow fibre membrane, each straw filters out sediment, silt, and waterborne micro-contaminants for up to 5,000 litres. With a universal 28mm dual thread, it attaches directly to standard water bottles, squeeze pouches, or lets you drink straight from natural sources.
Without FiltSipy
- Carrying kilos of heavy bottled water on long UK hillwalks
- Relying on chemical purification tablets that leave a foul chlorine taste
- Risking severe stomach bugs from untreated river or stream water
- Zero emergency water backup during UK mains cuts or severe floods
With FiltSipy
- Ultralight 13.5cm design clips easily onto your pocket or rucksack
- Instant pure water straight from freshwater sources with zero chemical taste
- Massive 5,000-litre filtration lifespan per straw for years of use
- Dual-thread compatibility connects directly to standard 28mm bottles
Precision British Engineering for Outdoor Hydration.
Pure, safe, and refreshing water wherever you explore.
0.01μm Hollow Fibre Membrane
Filter out fine sediment, microplastics, silt, and biological particulates with high precision. FiltSipy features an ultra-dense 0.01-micron hollow fibre membrane that purifies freshwater instantly without chemicals.
- Eliminates turbidity, sediment, and micro-particles effortlessly
- Zero chemical aftertaste, iodine, or chlorine tablets needed
- Smooth, effortless high-flow suction for easy direct sipping
Universal 28mm Dual-Thread Design
Versatile connectivity designed for the real world. The 28mm standard screw thread connects tightly to common mineral water bottles, standard soft flasks, and gravity squeeze bags.
- Screws directly onto most standard 28mm threaded plastic bottles
- Compatible with outdoor squeeze pouches and gravity systems
- Drink directly from natural springs, becks, and tarns
5,000-Litre Long-Life Capacity
Built for long expeditions and years of dependable use. Each individual FiltSipy straw delivers a massive 5,000-litre filtration capacity, offering months of reliable outdoor hydration per unit.
- Massive 10,000L combined capacity with the Buy 1 Get 1 Free pack
- Zero moving parts or electronic components that can fail
- Easily backwashed with clean water to maintain optimal flow rate
Compact 13.5cm BPA-Free Body
Engineered for maximum portability and durability. Measuring just 13.5 × 3cm and crafted from food-grade BPA-free materials, it packs easily into any pocket, jacket, or emergency grab-bag.
- Weighs mere grams to keep your pack light on steep ascents
- Includes handy carabiner clip and neck lanyard for quick access
- Durable dust cap keeps the drinking mouthpiece clean and hygienic
Enjoy crystal-clean water in 3 simple steps.
No setup, batteries, or waiting times required. FiltSipy delivers instant clean water straight out of your pocket.
Uncap & Prepare
Remove the protective dust caps from both ends of the FiltSipy filter straw to expose the drinking tip and intake.
Connect or Submerge
Insert the bottom directly into freshwater, or screw it onto any standard 28mm water bottle or compatible squeeze pouch.
Sip & Enjoy
Sip gently through the mouthpiece or squeeze the bottle for immediate, crystal-clear, refreshing hydration.
Dependable Hydration Across the UK In Any Environment.
FiltSipy Water Filter Straw
Portable 0.01μm Hollow Fibre Water Filter Straw Bundle
- 0.01μm hollow fibre membrane removes sediment & particles
- Up to 5,000 litres capacity per straw (10,000L total bundle)
- 28mm dual-thread fits standard bottles & squeeze bags
- Includes 2 blue straws, clips, and lanyards (BPA-free)
Why British outdoor enthusiasts choose FiltSipy.
Heavy bottled water wastes rucksack space and chemical tablets ruin the natural taste of fresh mountain water. FiltSipy gives you instantaneous, high-flow filtration with standard 28mm bottle compatibility and a huge 5,000L capacity.
Based on 1,420+ reviews from British hikers and campers
Based on verified UK purchases
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"Used the FiltSipy throughout a 4-day trek across the Lake District fells. It screwed straight onto my standard water bottle and the stream water tasted completely fresh and crisp. Saved me carrying kilos of extra weight."
"Brilliant bit of kit for wild camping in the Scottish Highlands. The flow rate is surprisingly fast and direct drinking from burns was effortless. Having two in the pack means my partner and I both have one."
"Kept one in my hiking backpack and the second in our household emergency grab-bag. High quality build, BPA-free, and great peace of mind if our local water supply ever fails."
30-Day Clean Water Peace of Mind Guarantee
Test FiltSipy on your wild camps, trail hikes, or outdoor expeditions for 30 full days. If you are not completely delighted by its crisp water flow, lightweight portability, and ease of use, return it for a prompt, hassle-free refund.
Got Questions? We Have Answers
Be Ready for Every Trek & Emergency with FiltSipy
Join thousands of British hikers, wild campers, and prepared households who rely on FiltSipy for pure, instant hydration. Buy 1 Get 1 Free with free tracked UK delivery.
Claim Buy 1 Get 1 Free Today