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An MRI machine thumps and pounds so loudly that it can rattle your head and spike your anxiety. Foam earplugs are the simple fix, but the right pair for that high-decibel room depends on one number: the Noise Reduction Rating (NRR), which tells you how many decibels of sound the plug blocks. The higher the NRR, the more of the scanner’s roar gets stopped before it hits your eardrum — and a 33 dB rating beats a 32 dB one in that fight.
I’m Mohammad Maruf — the founder and writer behind Gardening Beyond. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
We’ve matched the best earplugs for mri scan by their top noise reduction and all-day comfort so you can lie still and stay calm during your scan.
Our Picks at a Glance
How To Choose The Best Earplugs for MRI Scan
Choosing earplugs for an MRI is not like picking them for a concert or a night’s sleep. You are lying still inside a machine that can generate over 100 decibels, often for 30 minutes or more. The right pair must block maximum noise while staying comfortable enough for the entire scan.
Prioritize the Noise Reduction Rating
The single most important spec is the Noise Reduction Rating (NRR), measured in decibels (dB). It tells you how much sound the plug is rated to block when inserted correctly. For an MRI, aim for the highest NRR you can find — 32 dB or 33 dB is top tier for foam. A 33 dB rating blocks more of the scanner’s hammering than a 32 dB pair, and that small difference can be the line between tolerable and overwhelming.
Look for Slow-Rebound Foam
Foam earplugs work by expanding to fill your ear canal. Slow-rebound foam gives you time after rolling it thin to push it deep into your ear before it starts to swell. Fast-expanding foam can pop back out before you have it seated properly, leaving a gap that lets noise leak in. For a noisy MRI, a tight, full seal is everything.
Keep Comfort and Fit in Mind
You will likely wear the plugs for the entire scan, sometimes longer with setup time. Earplugs that feel fine for ten minutes can become painful at the 40-minute mark. If you have small ear canals, look for a softer, lower-pressure foam. If your canals are larger, a slightly bigger plug will stay seated better. A good fit is one you forget is there.
Quick Comparison
| Model | Best For | NRR (dB) | Pair Count | Foam Type | Amazon |
|---|---|---|---|---|---|
| Mack’s Ultra Soft Foam★ Best Overall | Comfort & highest rating | 33 | 100 | Ultra-soft | Amazon |
| 3M Disposable EarplugsBest Value | Blocking loud snoring | 32 | 80 | Slow-release | Amazon |
| VOISEN Foam Ear PlugsBudget Champion | Budget bulk value | 32 | 150 | Slow rebound | Amazon |
| Mack’s Maximum Protection | Larger ear canals | 33 | 40 | Low pressure | Amazon |
| Leffis Reusable Silicone | Washable reuse | 32 | 50 | Silicone | Amazon |
| MOLDEX Softies | All-day wear | 33 | 100 | Low-pressure | Amazon |
| Dison Foam (Green) | SNR 35 rating | 32 | 200 | Slow rebound | Amazon |
| Dison Silicone (Orange) | Corded convenience | 32 | 100 | Silicone | Amazon |
| HEAROS Xtreme | Balanced comfort & rating | 33 | 200 | Slow recovery | Amazon |
In-Depth Reviews
1. Mack’s Ultra Soft Foam Earplugs — 100 Pair Bag
Our pick — over 4.5★ from 500+ verified ratings; the strongest balance of quality and price.
The crowd favorite that pairs the highest 33 dB rating with the softest foam known for all-night comfort.
With a Noise Reduction Rating (NRR) of 33 dB — the highest a foam plug can carry — this pair out-blocks every 32 dB option on this list, so the MRI’s thumping drops to a distant thud. The foam uses a slow-release Comfy Cush formula that expands gently, giving you time to seat it deep before it fills your canal. Owners describe it as ultra-soft and mention wearing it for hours without the pressure that other brands create. One long-time user calls it a 15-year nightly habit, insisting the brown version beats every other color and brand tried.
It is a 100-pair resealable bag that keeps plugs clean and easy to grab from a nightstand or a clinic bag. Made in the USA, it is slightly larger than some rivals — a bonus for bigger canals, but a real issue for smaller ears. A few buyers report the plugs working loose overnight, so expect to check the seal before your scan starts.
Why It Wins
- 33 dB NRR — top-tier reduction for the loudest scanners
- Ultra-soft foam praised for hours of pain-free wear
- 100 pairs in a resealable bag for long-term supply
The Trade-Off
- Slightly larger shape may not suit very small ear canals
- A few owners mention plugs working loose overnight
Reach for this if: you want the maximum 33 dB rating wrapped in the most comfortable foam available.
Think twice if: your ear canals are on the smaller side and you have struggled with plugs that feel too big.
2. 3M Disposable Earplugs — 80 Pairs
Softly blocks a snoring spouse — and by extension, a clanging MRI — with barely-there pressure.
Customers note these are the best earplugs they have tried because they completely block loud snoring from a sleep apnea partner, while staying comfortable all night and staying in place. With an NRR of 32 dB, it is one step behind the 33 dB leaders, but the real story is the pliable design that slowly expands and conforms to your ear canal — a real benefit when you are lying still inside a scanner. Owners who live in noisy cities say it is softer than an “ultra soft” rival brand, with no pressure and barely any sensation of being worn.
The light blue foam is smooth to the touch and easy to insert once you roll it thin. The resealable bag keeps all 80 pairs (160 plugs) tidy, and the slow expansion means a wide range of ear canal sizes can get a proper fit. The only complaint that surfaces is consistency: an occasional plug arrives smaller or with foam that does not rebound, which takes some trial and error.
Where It Shines
- 32 dB NRR proven to silence loud snoring
- Slow-release foam conforms for all-night comfort
- Budget friendly at 80 pairs per bag
The Catch
- Quality control varies — an occasional plug may not fully rebound
- Pliable foam can make insertion fiddly at first
Best for: anyone who wants proven 32 dB blocking at a wallet-friendly price with a soft touch.
Look elsewhere if: you want the absolute top 33 dB rating rather than the 32 dB here.
3. VOISEN Foam Ear Plugs — 150 Pairs
A 150-pair box that restores night-shift sleep for apartment dwellers — at a bargain price.
If you work night shifts and live in a thin-walled apartment, this is the budget buy that helped one owner regain quality sleep — soft, painless, and effective. It carries a 32 dB NRR (Noise Reduction Rating) with a 37 dB SNR (Single Number Rating), a metric that measures overall attenuation. The slow-rebound foam is designed to seat into the ear canal without pressure.
At 150 pairs, this pack towers over the 80-pair 3M set — roughly 88% more plugs for your money — making it the obvious choice if you want a year’s supply in one go. A storage box is included to keep plugs clean between uses. It weighs 7.05 ounces versus the 3.21 ounces of the Mack’s Ultra Soft 100-pair bag, so you feel the extra foam when it arrives. Owners call it among the softest earplugs they have felt in 30 years, matching the noise reduction of pricier brands.
The trade-off: the foam expands slowly, so you must hold it in place longer while it swells — a minor patience test that pays off with a proper seal.
The Big Draw
- 150 pairs — the most plugs per dollar on this list
- 37 dB SNR rating with professional testing
- Soft foam praised for pain-free wear
Keep in Mind
- Slow expansion means holding plugs in place longer
- Noise reduction is strong but not absolute
Grab it if: you want maximum supply at minimum cost and can be patient with a slow-rebound insert.
skip it if: you prefer instant expansion for a quick, no-fuss fit before the scanner starts.
4. Mack’s Maximum Protection Soft Foam — 40 Pair
A 33 dB block that motorcycle riders love — and larger ear canals will finally feel comfortable.
This orange pair shares the 33 dB NRR crown with the Ultra Soft above, but it is built for a different ear. Mack’s designed it with Comfy Cush low-pressure foam specifically for larger ear canals, without the excessive bulk of other brands. Owners confirm it blocks about 90% of noise, including a snoring spouse.
Motorcycle riders report it kills wind noise on long rides and prevents the ear ringing that higher-rated plugs sometimes leave behind — a sign of the balanced seal it creates. One owner prefers it over the brown Mack’s version for staying in all night and blocking more sound. So, if standard plugs never seem to seal for you, this one is built to change that. The flip-top plastic jar makes grabbing a fresh pair easy, and the safety seal keeps the 40 pairs clean.
What Stands Out
- 33 dB NRR in a low-pressure foam for large canals
- Blocks wind noise and prevents ear ringing
- Convenient flip-top jar for clean dispensing
Consider This
- Too large for smaller ear canals, per several owners
- Higher price per pair than bulk bags
Choose it if: your ear canals run larger and other plugs never feel like they seal.
Pass if: you have small canals — the fit feedback skews too big for narrow ears.
5. Leffis Reusable Silicone Ear Plugs — 50 Pairs
A washable silicone design that doubles as swim plugs — for those who want reuse, not refills.
Unlike every foam pick above, this one is built from soft silicone with a three-flange “Christmas Tree” profile that creates a watertight seal — ideal if you also want swim earplugs that keep water out during a shower after your scan. It carries a 32 dB NRR and is made of non-toxic, BPA-free silicone that rinses clean and can be reused hundreds of times, making it a better long-term value than disposable foam. Owners use it for mowing, shooting trap, school, and sensory needs, calling it sturdy enough to wear over and over yet cheap enough to share.
Each pair comes with its own travel case, and the color variety is a fun bonus — reviewers point out they have ordered and reordered. The flexible flares adapt to most ear sizes. For an MRI, silicone’s firm seal is effective, but the fit leans small for some adult ears, and the longer handle can dislodge the plug if you try to sleep in it. Foam remains the more comfortable choice for long, still scans.
Why Choose Silicone
- Washable and reusable hundreds of times
- 3-flange design doubles as swim plugs
- Each pair has its own travel case
The Trade-Off
- Fit leans small for some adult ears
- Longer handle can dislodge plugs during sleep
Best for: swimmers and travelers who want one plug for the pool and the MRI room.
Consider foam instead if: you need maximum all-night comfort with zero pressure points.
6. MOLDEX Softies Foam Earplugs — 100 Pairs
A 33 dB workhorse trusted across a 15-year nightly habit — and airfield shifts.
This is the plug for people who live in noise all day and night. Made with the same low-pressure Comfy Cush foam philosophy as Mack’s, it holds a 33 dB NRR and is the only earplug one owner has used since 2010, worn nightly without the ear pain other brands caused. Airfield workers say it stays put for an entire shift and delivers excellent hearing protection in high-noise environments.
Owners describe it as soft, easy to insert, and high quality — a brand some have trusted for decades. The 100-pair count makes it a sensible stockpile, and its USA origin adds confidence for a clinical setting. Because it holds the top 33 dB rating, it sits in the same noise-blocking tier as Mack’s Ultra Soft at a lighter 4.8 ounces for the whole bag.
The feedback is not unanimous: some find the fit doesn’t stay seated in the ear, and opinions split on softness. It is a solid pick, but for the sheer consistency of comfort reviews, the Mack’s Ultra Soft above edges it out for first place.
The Strength
- 33 dB NRR with decades of loyal users
- Comfortable for all-day and all-night wear
- 100 pairs at a strong price
The Caveat
- Fit feedback is mixed — some won’t stay seated
- Softness opinions vary between owners
Reach for these if: you need a proven 33 dB plug that survives a full workday shift, not just a scan.
Look around if: you have tricky ears where plugs tend to work loose — fit reviews are split here.
7. Dison Foam Ear Plugs — 200 Pairs, Green
Individually wrapped 200-pair box with a 35 dB SNR — a music pro’s third box in a row.
This is the bulk buy for people who refuse to run out. With a 32 dB NRR and a higher 35 dB SNR (Single Number Rating), it is professionally tested and holds ANSI and CE certification. The crown jewel is the 200-pair count with each pair individually wrapped, which keeps plugs sterile and clean — a practical touch if you want a fresh, hygienic pair for an MRI appointment. You can grab one sealed pair for your scan and keep the rest as backup.
A music industry professional reports wearing these five days a week and ordering a third box, praising how they block crowd chatter while preserving music clarity. Owners say they dull noise well and make a noticeable difference when removed, ideal for classrooms, dorms, and worksites. The open packaging box with a pop-out bottom makes grabbing a pair one-handed easy.
Comfort gets a mixed read — some find it comfortable for hours, others report discomfort after a few hours of wear. For a 30–60 minute scan, that is usually not a dealbreaker, but it is not the coziest option for all-night sleeping. The sheer quantity, though, makes it among the most practical picks for a family or a busy household.
The Big Appeal
- 200 individually wrapped pairs — class-leading supply
- 35 dB SNR with ANSI and CE certification
- Pop-out box for easy one-handed access
Watch Out
- Comfort fades after a few hours for some
- Dulls loud noise but does not fully block it
Pick this if: you want a hygienic, individually wrapped pair for your scan plus a massive backup supply.
Consider a softer foam if: comfort over several hours of wear is your top priority.
8. Dison Silicone Ear Plugs — 100 Pairs, Orange
A corded silicone set you can hang around your neck — so a pair is always within reach.
Here is the silicone option that fixes the “lost plug” problem: each pair is connected by a rope you can hang around your neck, and the cord detaches when you do not need it. It carries a 32 dB NRR (Noise Reduction Rating) with a 32 dB SNR, professionally tested with ANSI and CE certification. The cord is a real asset in a busy MRI suite — your plugs stay with you between prep and the scan table, so you never have to fumble for a lost one.
Shoppers say these fit better than foam versions in some ears, with equal noise blocking and the bonus of being washable and reusable. One owner uses them nightly against a furnace and expressway traffic, noting the 100-pack lasts for years. An engineer-style review praises the pre-attached string and handle, which lets you insert and remove plugs without touching the ear tip — handy in dusty or busy environments.
The honest trade-off is fit: some find silicone less comfortable than foam for long stretches, slightly stiffer against the ear. For an MRI where you must stay still and quiet, foam still leads on cushioning, but the corded convenience here is genuinely unique on this list.
What Makes It Different
- Corded design hangs around the neck, no lost plugs
- Washable silicone reused for years
- 32 dB NRR with ANSI and CE certification
The Limitation
- Silicone feels less cushioned than foam
- Fit varies — some find it too firm
Great for: anyone who constantly misplaces earplugs and wants a cord that keeps them handy.
Prefer foam if: maximum softness for a long, still scan matters more than convenience.
9. HEAROS Xtreme Protection Foam Ear Plugs — 200 Pairs
A 33 dB tapered shape that shift workers call the best they have ever tried — and a decade-long habit.
This blue plug combines the highest 33 dB rating with a tapered shape and flat back that makes it easy to insert and remove. Made from a silky-smooth, hypoallergenic polyurethane foam, it uses a slow-recovery formula that gives you time to position it before it expands — exactly what you need for a calm, deliberate fit before an MRI begins. Shift workers report it blocks about 90% of disruptive noise.
Owners who have used HEAROS for nearly ten years say the 200-pair value pack prevents stockouts and the soft-yet-effective foam aids sleep and stress recovery. It edges out the 3M and Mack’s options on comfort in direct comparisons, with notes that it is softer, wider, and shorter than some rivals — a profile that works well even when only partially seated. The bright blue color is a plus if you want to see your plugs at a glance.
The feedback splits on firmness: some find it soft and comfortable, others say it feels too snug against sensitive ears. That is the honest caution for an MRI, where you want zero pressure for the full scan. For a 33 dB rating with a 200-pair supply, it is a strong top-tier contender.
The Perks
- 33 dB NRR with a tapered, easy-insert shape
- 200 pairs — top-tier protection with huge supply
- Slow-recovery foam beats rivals on comfort
Be Aware
- Firmer fit can feel snug for sensitive ears
- Opinions on softness are divided
Ideal for: shift workers and heavy users who want a top 33 dB rating in a bulk 200-pair box.
Try a softer foam first if: your ears are sensitive and you need the gentlest possible pressure.
Understanding the Specs
Noise Reduction Rating (NRR)
The NRR is the number that matters most for an MRI. Measured in decibels (dB), it tells you how much sound the plug is rated to block when inserted properly. A 33 dB rating blocks more of the scanner’s loud, rhythmic noise than a 32 dB rating — the difference between hearing a distant hum and hearing a muffled thud. Always reach for the highest NRR you can find, ideally 32 dB or 33 dB.
SNR and Slow-Rebound Foam
SNR, or Single Number Rating, is another measure of noise reduction, often slightly higher than the NRR for the same plug. Slow-rebound foam is a separate trait: it expands gradually after you roll it thin, giving you time to push it deep into your ear canal before it swells. Fast foam pops back too quickly, leaving gaps that leak sound. For holding still in a loud scanner, slow rebound means a better seal.
FAQ
Are foam earplugs safe to wear inside an MRI machine?
What is the highest NRR rating available for foam earplugs?
How loud is an MRI scan and will 32 dB earplugs be enough?
How do I insert foam earplugs correctly for a tight seal?
Will foam earplugs stay in place while I lie still during a scan?
Are reusable silicone earplugs as effective as foam for an MRI?
How many pairs do I actually need for a single MRI appointment?
What is the difference between NRR and SNR on earplug packaging?
Final Thoughts: The Verdict
For most people, the earplugs for mri scan winner is the Mack’s Ultra Soft Foam Earplugs because it pairs the top 33 dB rating with the most consistently praised comfort in its review base — a combination that matters when you must lie still in a loud scanner. If you want the most plugs for the least money, the VOISEN 150-pair box delivers unbeatable value at 32 dB. And for a washable, corded option that never gets lost, the Dison Silicone Corded pair is the one to reach for.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of August 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Gardening Beyond earns from qualifying purchases. This does not affect which products we feature.