FiltSipy Water Filter Straw
FiltSipy Water Filter Straw
Drink From Any Source With Total Confidence
FiltSipy harnesses physical 0.01μm micro-filtration. It instantly separates grit, impurities, and particles as you sip, giving you endless fresh water straight from the wild.
Without FiltSipy
- Hauling bulky, heavy water bottles on every trail
- Hesitating to drink from natural mountain streams
- Waiting 30 minutes for chemical tablets that taste like chlorine
- Worrying about clean drinking supplies during emergency blackouts
With FiltSipy
- Drink safely from any stream, river, or lake with zero hesitation
- Hike light without lugging kilos of heavy bottled water
- Enjoy crisp, clean taste free from murky sediment or chemicals
- Total peace of mind in every emergency kit and wild camping trip
Medical-Grade Purity
0.01μm hollow-fibre membrane blocks micro-particles
Massive 5,000L Lifespan
Up to 5,000 litres of clean water per straw
Dual-Thread Design
Screws straight onto standard 28mm bottles & bags
Ultra-Lightweight
Pocket-sized 13.5cm body ready for any pocket
Built for Safe Hydration Anywhere
Engineered for wild camping, fell walking, and emergency survival kits—clean hydration when you need it most.
0.01μm Hollow-Fibre Membrane
Engineered with medical-grade 0.01μm hollow-fibre technology, effectively intercepting suspended debris, micro-particles, and organic impurities from freshwater sources.
Universal Dual-Thread Versatility
Drink directly from natural springs or screw the straw seamlessly onto standard 28mm bottles, squeeze flasks, and outdoor hydration bladders.
Stated 5,000 Litre Filtration Life
Provides a dependable stated lifespan of up to 5,000 litres. Built for years of wilderness exploration, survival rucksacks, and emergency storage.
5,000L
Total Output
0W
Zero Power
Years
Long Lifespan
Pocket-Sized & Ultra-Durable
At just 13.5cm in length and roughly 3cm across, this BPA-free food-grade straw slips cleanly into your pocket, rucksack, or glove box with zero bulk.
Pure Water in 3 Easy Steps
No boiling, no chemical waiting times, and no battery recharging. Instant pure water in three quick steps.
Dip or Screw On
Dip the straw directly into any stream, lake, or glass, or screw it onto a standard 28mm plastic bottle.
Sip or Squeeze
Draw water smoothly through the straw, or squeeze your bottle for a constant stream into a cup or pan.
Backflush & Pack Away
Blow gently through the mouthpiece to clear remaining water and keep the membrane clear for 5,000 litres.
Inspect FiltSipy in Detail
FiltSipy Water Filter Straw
Personal Water Filtration Straw (Twin Pack)
See How We Compare
Not all portable water filters are built to the same standard.
5,000L
Litres filtered per straw
0.01μm
Filtration membrane rating
0
Batteries or waiting time needed
Based on 1,250+ verified UK reviews
Trusted by British Hikers
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"Used FiltSipy during a three-day hike across the Lake District. Drank straight from mountain streams without carrying massive water weight. Superb flow rate and tasted brilliant."
Tom H., Cumbria
Verified UK Buyer
"The fact it screws onto standard 28mm bottles makes it ten times more versatile than old filter straws. I kept one in my hillwalking kit and gave the second to my brother. Absolute bargain."
David W., Edinburgh
Verified UK Buyer
"We keep these in our home emergency preparedness cupboard after a water main burst nearby last winter. Compact, BPA-free, and knowing you get 5,000 litres per straw offers total peace of mind."
Emma G., Bristol
Verified UK Buyer
1,250+ verified reviews
30-Day Money-Back Guarantee
Test FiltSipy risk-free on your next hike or camp for 30 days. If you're not completely satisfied with its build quality and effortless filtration, return it for a full refund—no questions asked.
Frequently Asked Questions
Everything you need to know about outdoor water filtration.
Pure Drinking Water Wherever You Go
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