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S1 Emergency Water Filter Straw

The GUARD-S1 uses a power-free, lab-tested, 4-stage micro-filtration system to turn rivers, lakes, and rainwater into safe drinking water for your family instantly.
✓ Works when the power grid fails
✓ Removes 99.99% of contaminants
✓ Never expires, backed for life
✓ Provides up to 400 gallons of clean water
✓ Scientifically developed & lab-tested
✓ Ultra-light & portable
LIMITED TIME | EACH PURCHASE INCLUDES:
The Ultimate Survival Ebook
The Ultimate Survival Ebook

Essential crisis skills and self-reliance made simple.

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Food Storage Guides & Workbook
Food Storage Guides & Workbook

Simple checklists to organize food, supplies and storage.

$20 FREE
16 Emergency Prep Checklists
16 Emergency Prep Checklists

Practical checklists for emergency preparedness.

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“This product is easy to carry, simple to use, and a great addition to my outdoor kit.”
Verified Customer ★★★★★
Product Description ⌄

The One Thing Standing Between Your Family and Survival

You can last three weeks without food. Without clean water, you have about three days.

When disaster hits — a hurricane, a grid failure, a contaminated municipal supply — bottled water vanishes from shelves within hours. Stores empty. People fight over the last case. While everyone else is scrambling, the question is simple: what's your plan?

When Everything Else Fails, This Works

The GUARD-S1 turns almost any freshwater source — streams, ponds, lakes, even collected rainwater — into clean, drinkable water. No power. No batteries. No chemicals. [Hang it and let gravity do the work. / Sip straight from the source or screw it onto a bottle.]

While other families ration their last few bottles, you'll have a steady supply of safe water on demand.

Filtration Built for the Worst Case

Our 0.1-micron hollow-fiber membrane removes:

  • 99.99% of waterborne bacteria
  • 99.99% of parasites & protozoa
  • 99.99% of microplastics

This isn't a camping gadget. It's hollow-fiber filtration in the same class relied on by emergency responders and the outdoor survival community.

Small Enough to Forget, There When It Counts

The GUARD-S1 packs down small enough to live in your bug-out bag year-round — no shelf life, no expiration date, and up to 400 gallons of clean water over its lifespan. Drop one in your emergency kit, your glovebox, every go-bag in the house.

Because the worst time to find out you're unprepared is when the crisis is already here.

Don't wait until it's too late. The time to prepare is now — while you still can.

Shipping Details ⌄

Orders are processed within 1-3 business days. Delivery times vary by destination. Tracking information will be provided after shipment.

MOSSMEMO

CLEAN WATER. GREATER PEACE OF MIND.

The one thing standing between your family and survival.

You can last weeks without food. Without clean water, you have only days. GUARD-S1 gives you a compact, power-free way to filter freshwater when everyday water access is disrupted.

Using the GUARD-S1 emergency water filter outdoors

WHEN EVERYTHING ELSE FAILS

A practical water plan for the unexpected.

A storm, a grid failure or a disruption to your local water supply can make clean drinking water harder to access. GUARD-S1 is designed to help you prepare before that moment arrives.

Keep it in your emergency kit, vehicle or outdoor pack. No outlet, charging cable or batteries are needed to operate the filter.

BUILT FOR THE UNEXPECTED

Filtration you can count on when it matters.

A compact, power-free filtration system designed to help you access cleaner freshwater during outdoor trips and unexpected disruptions.

0.1μmHollow-fiber membrane
4-stageFiltration system
99.99%Claimed bacteria reduction*
400 galFilter life, up to

*Use only as directed. Performance depends on source-water quality and proper maintenance. This filter is not intended to remove dissolved chemicals, fuel, heavy metals or salt.

THE COMPLETE KIT

Everything you need. Nothing you don't.

The GUARD-S1 system brings the essential tools together in one compact kit, ready to pack in your emergency bag, vehicle or outdoor gear.

GUARD-S1 emergency water filter kit components
01 / FILTER

0.1-Micron Filter Straw

The core of the system. Its hollow-fiber membrane is designed to reduce bacteria, parasites, protozoa and microplastics from freshwater.

02 / MAINTENANCE

Backwash Syringe

Flushes trapped sediment from the filter core to help restore flow when it slows. Follow the included cleaning instructions.

03 / REACH

Flexible Extension Hose

Helps draw water from shallow or hard-to-reach spots and gives you more flexibility when collecting water.

04 / COLLECTION

Collapsible Squeeze Pouch

Collect freshwater, attach the filter and squeeze water through the system into a bottle or container.

05 / GUIDANCE

Illustrated Instructions

A visual guide to setup, drinking methods and filter care, so you can learn the process before you need it.

06 / CARRY

Carabiner Clip

Attach the kit to a backpack, belt loop or emergency bag and keep it easy to find when heading out.

HOW IT WORKS

Four simple steps to cleaner water.

No electricity. No batteries. No complicated setup.

STEP 01

Collect

Fill the pouch with freshwater from a stream, lake, pond or collected rainwater.

STEP 02

Connect

Attach the filter to the pouch or a compatible bottle. Check that connections are secure.

STEP 03

Filter

Sip through the straw or gently squeeze the pouch to push water through the filter membrane.

STEP 04

Drink

Collect the filtered water in a clean container and follow all product instructions.

Water before and after filtration demonstration

READY WHEN YOU NEED IT

From your pack to your water source.

Lightweight and compact, GUARD-S1 is designed to travel with you on hikes, camping trips and emergency-preparedness outings.

FAQ

Good questions. Straight answers.

Important information to help you use and care for your GUARD-S1 filter.

How does the GUARD-S1 work?

Drink through the filter straw from a freshwater source, or fill the included pouch, attach the filter and squeeze water through the 0.1-micron hollow-fiber membrane. Follow the included instructions for each method.

What does it filter out?

The hollow-fiber membrane is designed to reduce waterborne bacteria, protozoa and parasites, microplastics and sediment. Refer to the current laboratory test report for the exact organisms tested and reduction rates. It is not designed to remove dissolved chemicals, fuel, heavy metals or salt.

What water sources can I use?

Use natural freshwater such as streams, rivers, lakes, ponds and collected rainwater. Avoid saltwater and any water suspected of chemical or industrial contamination. Choose the clearest available source to help extend filter life.

Does it need power, batteries or chemicals?

No. The GUARD-S1 uses suction or manual squeezing and does not require electricity, batteries or chemical tablets.

How long does the filter last?

The stated capacity is up to 400 gallons. Actual service life depends on source-water quality and maintenance. Backflush the filter as directed when flow slows.

How do I clean and maintain it?

Use the included syringe to backflush the filter according to the product instructions. Allow the filter to dry completely before long-term storage when instructed by the manufacturer.

Can the filter freeze?

Do not allow a wet hollow-fiber filter to freeze. Ice can damage the membrane. Dry it fully before storing it in locations that may reach freezing temperatures.

What is included in the GUARD-S1 kit?

The six-piece kit includes the filter straw, collapsible squeeze pouch, flexible extension hose, backwash syringe, carabiner clip and illustrated instructions.

DELIVERY INFORMATION

Shipping details

ProcessingOrders are typically processed within 1–3 business days.
ShippingShipping cost and available methods are shown at checkout or in the store shipping policy.
TrackingTracking information is provided after the order has shipped.
MOSSMEMO

Be ready when clean water matters most.

Prepare your water plan now. Keep your GUARD-S1 system accessible, learn how to use it and follow the included care instructions.