Most people choose ear plugs by the number on the packet. For sleep, the material usually matters more. It decides how the plug feels against a pillow at 3am, whether it seals in your particular ear canal, how clean it stays, and whether it lasts one night or many months.
There are four main families: expanding foam, pre-moulded silicone, mouldable wax or silicone putty, and custom moulded plugs made from an impression of your own ear. Each one solves a different problem, and each has a weakness the packaging tends to skip.
Here is how they compare on the things that decide a night's sleep: blocking, comfort on your side, hygiene, lifespan and cost.
The Four Main Types at a Glance
Foam. Soft foam that you roll thin, insert and let expand. The US National Institute on Deafness and Other Communication Disorders (NIDCD) describes foam plugs as expanding to fill the ear canal snugly once they are in.
Pre-moulded silicone. Shaped plugs, often with flanges or a dome tip, made from silicone, rubber or plastic. They go into the canal and keep their shape, so they come in sizes rather than adjusting themselves to you.
Wax and silicone putty. A soft, mouldable piece that you warm, shape and press over the entrance to the canal. Which? describes wax plugs as forming a seal over the ear canal rather than being inserted into it.
Custom moulded. Made from an impression of your ear canal. Which? puts the typical starting price at around £80.
For the noise ratings printed on the box, and how much you actually need, see what SNR do you need to block out snoring.
Foam: The Strongest Seal, If You Fit It Well
Foam's advantage is that it fills the canal. Because it expands into whatever shape your ear happens to be, one size suits a wide range of people, and when it is inserted properly it is hard to beat for blocking sound.
A 2018 study in Noise and Health compared two foam plugs with two pre-moulded plugs in 49 people, measuring how much each one reduced sound in each person's own ears. The foam plugs gave significantly higher attenuation, and that held even for people who said they preferred the pre-moulded type.
The catch is that foam only performs when it goes in properly. It needs rolling into a thin, crease-free tube, inserting with the ear pulled up and back, and holding still while it expands. NIDCD warns that creases in the foam can create tunnels for sound to get through. Rushed insertion is also the main reason foam ends up half out by morning, which we went through step by step in how to prevent ear plugs from falling out during the night.
There are three other trade-offs to weigh up.
Constant pressure. Foam works by pushing gently outward against the canal wall. Some people never notice it; others find it tiring over a full night, especially if the plug is a little large for them.
Hygiene. Foam is porous. Which? notes that its porous material can host bacterial growth, so it needs replacing often, and judges foam better suited to single uses than to nightly sleep. NIDCD takes a similar line: foam plugs are meant for one use, but can be reused if they are clean and still expand fully back to their original shape.
Running cost. If you replace foam every night or two, a cheap packet turns into a steady expense over a year.
Foam suits people who sleep mostly on their back, who need the most blocking they can get for a particular night, or who only use plugs now and then, on a train or in a hotel.
Silicone: Reusable and Easier to Get Right
Pre-moulded silicone plugs trade a little blocking for convenience. There is no rolling and no waiting. You push them in, usually with a slight twist, and they hold their shape.
In the same 2018 study, 31 of the 49 participants preferred the pre-moulded plugs, against 18 who preferred foam. The pre-moulded plugs scored better for ease of placement, for simplicity, and for the occlusion effect, which is the boomy, blocked-up sound of your own voice and breathing that some plugs create. The authors concluded that choosing hearing protection should be personal, weighing comfort as well as how much sound is blocked.
Those participants were testing hearing protection, not sleeping in it, so treat this as a guide rather than a bedroom verdict. The logic carries over: a plug that is easy to place correctly in the dark, half asleep, is one you will keep wearing.
Hygiene is the other big advantage. Which? describes silicone plugs as non-porous, meaning they won't absorb sweat or bacteria, and easy to clean with soap and water, which makes them practical to reuse every night.
Size matters more than with foam. A pre-moulded plug cannot expand to fit you, so it has to match your canal. Too large and it presses; too small and it never seals. This is why sleep plugs that come with several tip sizes are worth the small extra effort of trying each one.
This is the category Massner's reusable silicone ear plugs belong to. They are made from extra soft silicone with a loop design, go in with an insert and rotate action, and come with XS, S, M and L tips so you can match the size to your ear. They are also low profile, which matters if you sleep on your side. Massner does not publish an SNR figure for them, so we do not quote one.
Wax and Putty: Sealing the Entrance Instead
Mouldable plugs take a different approach. Rather than going into the canal, they cover its opening.
Which? describes wax plugs as being warmed in the hand, moulded to fit, and forming a seal over the ear canal rather than going inside it. It notes that this can give a tighter seal, but that wax can be a bit greasy and attract dirt and fluff, and that most wax plugs are designed for single use. Silicone putty works on the same principle, pressed flat over the opening.
That makes wax and putty the natural choice for anyone who dislikes the feeling of something inside the ear, or who finds even small inserted plugs uncomfortable. Because they sit flat against the ear, many side sleepers get on well with them.
The trade-offs are practical. Wax picks up hair and lint, can leave a greasy feel on the pillowcase, and can lose its seal if the pillow pushes it out of shape. Always flatten it over the opening, never push it into the canal. And because most of it is single use, the running cost sits closer to foam than to reusable silicone.
Custom Moulded: When Off the Shelf Will Not Do
Custom plugs are made from an impression of your ear canal, usually taken by a hearing professional. Which? says they tend to be a better fit, can last a few years with regular cleaning, and typically start from around £80.
In a Which? survey of 3,774 members in May 2023, 79 percent of people using custom made ear plugs rated them very or extremely effective, compared with 36 percent for disposable and reusable plugs.
That is a large gap, but it is a members' survey rather than a controlled trial, and people who paid more may simply rate their purchase more kindly. It is still a reasonable signal that fit drives satisfaction.
Custom plugs make the most sense if you wear plugs every night and expect to for years, if you have tried several off the shelf sizes without finding one that seals comfortably, or if your ear canals are unusually narrow. NIDCD suggests talking to a hearing health professional about custom made earplugs, and that is also the right person to see if you have a history of ear problems.
Side Sleepers: Profile Beats Material
Lying on your side presses the outer ear into the pillow, and anything sticking out of the ear gets pressed with it. That is behind most side sleeper complaints: soreness by morning, or a plug twisted out of position.
Which? sets the standard simply: the most comfortable ear plugs can't be felt when lying on your side. In practice, that comes down to four things.
- How far it sticks out. A low profile plug that sits within the bowl of the ear is barely touched by the pillow. One with a long stem or a hard handle gets pushed further in every time you turn.
- How soft it is. Softer material gives way under pressure instead of pressing back into the canal.
- Whether it fits. An oversized plug sits further out and catches the pillow. If a plug hurts, try the next size down before giving up on that type.
- The pillow itself. A softer pillow, or one shaped to leave space around the ear, takes pressure off whatever is in it.
Every material can work for side sleeping when these are right. Hard plastic plugs and long stemmed designs are usually the least comfortable choice.
Hygiene and Lifespan by Material
Anything that sits in or against your ear for eight hours picks up wax, skin oil and sweat. The NHS lists wearing earplugs, along with water and eczema, among the things that can irritate the ear canal and lead to an outer ear infection. Clean plugs and clean hands lower that risk, and NIDCD advises always making sure both your hands and the earplugs are clean before you put them in.
Foam. Treat it as single use, or reuse it only while it is clean and springs fully back to shape. Once it stays squashed, looks grubby or feels stiff, it goes in the bin.
Silicone. Wash with mild soap and warm water, rinse well, and let it dry completely before storing. Replace it when it tears, turns tacky, or stops sealing. Our full routine is in how to clean reusable ear plugs.
Wax and putty. Mostly single use, according to Which?. Throw it away once it has collected fluff or will not hold its shape.
Custom. Clean regularly. With care, Which? says they can last a few years.
Whatever the material, stop using plugs and speak to a pharmacist or GP if you develop ear pain, itching that does not settle, discharge, or a change in your hearing. We covered the wider safety questions, including earwax, in are ear plugs bad for your ears.
Which Should You Choose?
There is no single best material. There is a best match between the material, your ears and the way you sleep.
- Back sleeper who wants maximum blocking: foam, inserted carefully and replaced often.
- Side sleeper using plugs every night: soft, low profile silicone in the right size, or wax if anything inside the canal bothers you.
- Small or sensitive ear canals: wax or silicone putty over the opening, or the smallest silicone tip.
- Occasional use when travelling: foam is cheap, light and fine for a night or two.
- Nightly use for years, and nothing off the shelf fits: custom moulded plugs, through a hearing professional.
- You need to hear an alarm or a child: do not chase the strongest block. A comfortable plug with moderate blocking is the safer choice.
If you are new to silicone, start with a middle size, give it a few nights, and change size if it presses or will not seal. If light is waking you too, the Massner silk eye mask comes with a free pair of ear plugs and a pouch, which is a simple way to try both together.
Frequently Asked Questions (FAQs)
Which ear plug material blocks the most noise?
Expanding foam, as a rule. In a 2018 study of 49 people, foam plugs gave significantly higher measured attenuation than pre-moulded plugs, even among people who preferred the pre-moulded type. That advantage depends on correct insertion, though. Foam that is not rolled thin and held while it expands gives away part of its edge, and any plug you pull out at 2am blocks nothing for the rest of the night.
Can you reuse foam ear plugs?
Briefly, and only while they are in good condition. NIDCD says foam plugs are meant for one use but can be reused if they are clean and still expand fully back to their original shape. Which? notes that foam is porous and can host bacterial growth, so it needs replacing often. If a foam plug stays squashed, looks grubby or feels stiff, throw it away.
Are wax ear plugs good for side sleepers?
Often, yes. Wax and silicone putty sit over the entrance to the ear canal rather than inside it, so there is little to press into the canal when you lie on the pillow. The downsides are that wax can feel greasy, picks up hair and lint, and is mostly designed for single use, so it costs more over time than reusable silicone.
Are custom moulded ear plugs worth the money?
For nightly, long term users who cannot find a comfortable fit off the shelf, they can be. Which? says they typically start from around £80 and can last a few years. In its 2023 member survey, 79 percent of custom plug users rated them very or extremely effective, against 36 percent for disposable and reusable plugs, though a survey like that is not a controlled trial.
How do I know which silicone ear plug size I need?
Start in the middle of the range and judge by feel and seal. NIDCD notes that when plugs fit properly your own voice should sound different, possibly louder or muffled, and that wearing them should never be painful. If a plug presses, aches or sits proud of the ear, go down a size. If it slides out easily or makes no difference to sound, go up one.
Do Massner ear plugs have an SNR rating?
No SNR or NRR figure is published for them, so we do not quote one, and it is best to treat their attenuation as unstated rather than assume a number. What the listing does describe is extra soft reusable silicone, a loop design, an insert and rotate fit, XS, S, M and L tips, and a low profile intended for side sleepers.
Sources
- National Institute on Deafness and Other Communication Disorders, Hearing Protectors, NIDCD Fact Sheet, 2020
- Samelli AG et al., The study of attenuation levels and the comfort of earplugs, Noise and Health, 2018
- Sayers L, Best ear plugs for sleeping in 2026, tried and tested, Which?, 2026
- NHS, Ear infections
This article is general information, not medical advice. If you have ear pain, discharge, itching that does not settle or any change in your hearing, stop using ear plugs and speak to a pharmacist or your GP.
