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DESIGNED FOR COMFORT,
LESS SNORING AND
BETTER WELL-BEING.

10K+Positive Reviews

AI-generated illustrative portrait 1 AI-generated illustrative portrait 2 AI-generated illustrative portrait 3 AI-generated illustrative portrait 4

Illustrative portraits

Real feedback from the DIFINEY community.

Derek M Cornetta
Dentist
Emmett Lynch
Snoring Specialist

Reviewed & Recommended
by a Dentist &
Snoring Specialist

DIFINEY 4.0 adjustable mouthpiece
DIFINEY 4.0
Shop DIFINEY 4.0 →
3rd Party Tested
FDA 510(k)-Cleared
Free Shipping
90-Day Risk-Free Trial
3rd Party Tested
FDA 510(k)-Cleared
Free Shipping
90-Day Risk-Free Trial

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DIFINEY 4.0 Advanced Mouthpiece Top Seller
What's inside the DIFINEY 4.0 Advanced Mouthpiece box What's Inside the Box

Most Popular

DIFINEY 4.0 Advanced Mouthpiece

4.7
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DIFINEY 2.0 Anti-Snoring Mouthpiece

4.6
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$45.98 $49.98
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DIFINEY Reusable Nasal Strips Drug-Free
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sustainable

DIFINEY Reusable Nasal Strips

4.8
· 40 reviews
$39.98
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DIFINEY Ultrasonic Cleaner NEW
DIFINEY Ultrasonic Cleaner

Multi-Use Cleaning

DIFINEY Ultrasonic Cleaner

$39.98
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DIFINEY 4.0 Advanced Mouthpiece Top Seller
What's inside the DIFINEY 4.0 Advanced Mouthpiece box What's Inside the Box

Most Popular

DIFINEY 4.0 Advanced Mouthpiece

4.7
· 521 reviews
$49.98 $59.98
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DIFINEY 2.0 Anti-Snoring Mouthpiece Sale
What's inside the DIFINEY 2.0 Anti-Snoring Mouthpiece box What's Inside the Box

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DIFINEY 2.0 Anti-Snoring Mouthpiece

4.6
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$45.98 $49.98
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DIFINEY Reusable Nasal Strips Drug-Free
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sustainable

DIFINEY Reusable Nasal Strips

4.8
· 40 reviews
$39.98
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DIFINEY Ultrasonic Cleaner NEW
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Clinically endorsed

Reviewed by Leading Dentists and Snoring Specialist

Derek M Cornetta

Leading Dentist DDS FAGD

Emmett Lynch

Adult sleep and snoring specialist

Top Seller FDA-Cleared
A Personalized Fit, Made To Silence Snoring From Night One.

Difiney 4.0 — Professional-Level Fit

A Personalized Fit, Made To Silence Snoring From Night One.

Difiney 4.0

Starting at
$49.98 $59.98 Save $10

As low as $0.26/night over 6 months.

  • Free Shipping
  • 90-Day Money-Back Guarantee
  • FDA-Cleared & BPA-Free
  • 1-6mm Adjustable Fit
Try It Risk-Free For 90 Days

Why Snoring Happens

1 in 4 Adults

Snore Regularly

90 Million

Americans Report Snoring

37 Million

Chronic Snorers

How Snoring Starts

How Snoring Starts

When you drift into deep sleep, your throat muscles relax. This can narrow the airway, making airflow less smooth and creating the conditions for snoring.
Airway restricted Tissue vibration
Why It Gets Louder

Why It Gets Louder

As the airway narrows, air has to move through a smaller space. This can increase tissue vibration, making snoring louder and more disruptive.
Open airway Narrowed airway
How Difiney Helps

How Difiney Helps

Difiney gently positions the lower jaw forward to help keep the airway more open. With smoother airflow and less tissue vibration, sleep can feel quieter and more comfortable.
Restful Nights Less vibration
Trusted by 200,000+ Users

Trusted by 200,000+ Users

  • 90-Day Risk-Free Trial

    Try Difiney at home. If it's not the right fit, we'll make it right or refund you within 90 days.

  • FDA-Cleared Assurance

    FDA 510(k) Cleared & Regulated. Built to clinical standards with zero compromises.

  • Custom-Fit Comfort

    Unlike one-size-fits-all guards, ours lets you micro-adjust until it's perfect.

  • Backed by Science

    Medical-grade purity. 100% BPA free, designed for safe nightly oral use.

  • BPA-Free Materials

    Medical-grade purity. 100% BPA free, designed for safe nightly oral use.

  • Targets the Source of Snoring

    By gently advancing the lower jaw, Difiney helps keep your airway open by addressing snoring at its root for quieter, more restful sleep.

Feel good about choosing Difiney

Feel good about choosing Difiney

Sleep deeper, Wake up refreshed -Backed by Experts and Trusted worldwide.

SLEEP Comfortably · CONFIDENTLY · ANYWHERE

Peace at Home

Peace at Home

Partner-Friendly · Family-Friendly

Better Rest in Transit

Better Rest in Transit

Long-haul Travel · Rest On The Go

Comfort Away

Comfort Away

Weekend Away · Short Trip · Overnight Stay

Peace at Home

Peace at Home

Partner-Friendly · Family-Friendly

Better Rest in Transit

Better Rest in Transit

Long-haul Travel · Rest On The Go

Comfort Away

Comfort Away

Weekend Away · Short Trip · Overnight Stay

15,600+ Verified Reviews

Backed by years of product refinement and trusted by 200,000+ users, Difiney is designed to make snoring support feel simple, adjustable, and comfortable enough for nightly use.

"By the third night, I noticed a huge difference. It's a bit odd at the beginning but it works."

Michael S.

Verified Purchase

"I was skeptical but thought I would give it a try. Wow! I wakeup in the morning refreshed and clear-headed again like I used to."

David A.

Verified Purchase

"Took 5 minutes to fit. My partner says the difference is night and day. Wish I had found this years ago."

Sarah K.

Verified Purchase