PHILTER
LAB-TESTED AIR PURIFICATION · 35,000+ CUSTOMERS
Patented Zero-5™ micro-filtration eliminates 99.75% of smoke, vapor, and odor at the point of exhale — so you can stay where you are, with the people you’re with.
★★★★★ 4.8 · 35,000+ customers
SGS Lab Verified · Smooth Exhale · Sub-3-Inch EDC
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From $37.99 · 30-Day Clean Air Guarantee · Free shipping with refills
ENGINEERED, NOT IMPROVISED
01 99.75%
Particulate elimination to 0.3 microns — SGS lab verified
02 9 + 3
Utility and design patents
03 30 min
How long an unfiltered exhale stays active in shared air
04 BAT
Joint development agreement with British American Tobacco
THE SHARED AIR FRICTION
Exhaled smoke doesn’t vanish when the room stops smelling. It stays suspended and biologically active in shared air for up to 30 minutes, and travels more than 20 feet from the person who exhaled it.
That’s why you end up on the patio in freezing rain. Why the couch still smells on Tuesday. Why a $250 hotel cleaning fee is a real line item. Courtesy isn’t a feeling problem — it’s a physics problem, which means it has a technical fix.
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Patio exile
Stay in the room
ZERO-5™ TECHNOLOGY
Engineered so the exhale still feels like an exhale.
01 SMOOTH EXHALE — Proprietary airflow reduces back pressure — no “blocked straw” resistance.
02 99.75% ELIMINATION — Medical-grade HEPA layers trap particulates down to 0.3 microns.
03 ODOR NEUTRALIZATION — Specialized media scrubs the VOCs that make odor linger.
04 CLEAN AIR RELEASE — Invisible, odorless output.
05 ZERO CLOUD — Five stages sealed in one pocket-sized shell.
Control Smoke & Odor
Instantly capture smoke, vapor, and smell at the point of exhale.
99.75% Lab-Tested Microfiltration Technology
Patented 5-stage filtration with low back-pressure for a natural exhale.
Consume Without Compromise
Stay where you are. No stepping outside, no leaving the moment.
Clean Air For Loved Ones
Peace of mind for family, pets, and partners.
Pocket-Sized Portability
Ultra-compact, built for everyday carry.
At Home
Your couch, clean air. Pets, kids, non-smoking partners, thirdhand odor in fabrics. 63% buy primarily for home protection.
Social & Events
Stay in the moment. Concerts, festival pits, golf, tailgates. Enjoy the session without walking away or clouding a stranger.
Travel & Rentals
Zero odor. Zero fines. Hotels, Airbnbs, rental cars, apartments. Pocket-sized insurance against $250–500 fees.
★★★★★ 4.8 · verified purchases only
“My apartment doesn’t smell anymore. Roommates had no idea I was even home.”
Alex M.
Verified Buyer
“Blew right into it and nothing came out the other side. Sold.”
Jordan K.
Verified Buyer
Isabel L.
Verified Buyer
PHREND vs. the old way.
PHILTER PHREND
99.75%, SGS certified
Engineered low back-pressure
Sub-3-inch pocket EDC
Biodegradable cartridge
Legacy carbon filters
Unverified
Restrictive
Bulky plastic
Throw whole shell away
Dryer sheet tube
None
Inconsistent
Improvised
Single-use waste
Design language
Sleek, adult, EDC
Headshop gimmick
Embarrassing
OPTION A — PHREND
$37.99 · Black or Light Green
Up to 500 exhales. About 7¢ each time you would have gone outside, cracked a window, or just held it in.
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Checkout on shopphilter.com · secure · discreet shipping
The 30-Day Clean Air Guarantee
01
Use the whole filter, then decide. Not “keep it sealed.”
02
If it doesn’t do what we said, we refund it — used cartridge and all. Keep the sleeve.
03
No return shipping required. One guarantee per customer.
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Does it feel hard to exhale through?
No “blocked straw.” The Zero-5™ airflow system is engineered for low back-pressure and a natural-feeling exhale. Depending on lung capacity you may feel slight resistance — that’s the filter doing its job.
Does it work for flower and vape?
Yes. Lab-tested and verified on combustible smoke and oil vapor.
How long does a cartridge last?
Up to 500 exhales on PHREND. Swap a fresh cartridge in under a minute; the sleeve is yours to keep.
How do I dispose of it?
The cartridge is biodegradable plant-based polymer and breaks down in under three years. The box is seed paper — plant it and it grows wildflowers.
What if it doesn’t work for me?
The 30-Day Clean Air Guarantee. Use it, and if it doesn’t deliver, tell us within 30 days for a refund.
Join 35,000+ people who stopped choosing between their comfort and everyone else’s air.
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★ 4.8 · 99.75% SGS lab verified · 30-Day Clean Air Guarantee
SGS mark
Patent numbers owed
Shipping and returns
Support