Best Earplugs for Open Water Swimming: A Guide

The best earplugs for open water swimming are the Alpine WaterSafe: a flanged silicone plug with a HydroWing that Alpine says holds a soft seal through heavy wipeouts while letting outside sound through. The Mack's AquaBlock is the alternate pick for swimmers who want a triple-flange design and a 6 count box in one case. Five picks, all silicone, and only one of them is built around hearing your safety kayaker.

Best earplugs for open water swimming at a glance

How I screened the field down to five

I started with silicone. Foam earplugs swell in water, wax plugs need warm skin to seat, and neither travels well from a cold lake back to a car boot. Every pick here is a reusable silicone plug that can be washed, dried and used again.

From there I cut on three things:

1. Fit variety. A plug that ships in one shape excludes half the ears in a group. Multi-pack sets and sized options survived.
2. Retention design. For open water swimming, a plug needs a flange, a wing or a contoured stem. A flat cylinder falls out on the second duck-dive.
3. Case included. A silicone plug lost in wet grass is a plug you do not find. Every pick here ships with storage.

What the input does not give me is a decibel rating, a water-column rating, or any independent measurement of seal quality. So I have not ranked on those. I have ranked on design intent, count, and how the specifications compare across the five.

The wording of the search term deserves a note. Amazon returned general swim earplugs against "open water swimming", and none of these five listings is marketed exclusively for lakes or the sea. Read every pick as a swim earplug that can be used in open water, not a specialist open-water design. That distinction matters, and I come back to it in the next section.

Does open water actually change the brief?

Yes, in three ways, and it is worth being honest about which of them the products here address.

Cold water hits harder than pool water. A well-seated plug reduces the cold flush into the canal that some swimmers link to exostosis, though none of the listings here make that clinical claim and neither do I. Chop and wipeouts pull plugs that a lane swim would never dislodge, which is why a flange or a wing matters. And in a group swim you need to hear a coach or a safety kayaker, which is exactly where a fully sealed plug becomes a hazard.

Only the Alpine WaterSafe addresses the third point in its listing. Alpine says the plug is designed to let you hear a coach, friends and surroundings while still blocking water. The other four are sealed silicone designs and make no hear-through claim. That is not a fault, it is a choice: a solo lake swimmer with a tow-float wants the tightest seal available, a group swimmer wants to hear the whistle.

None of these listings publishes a decibel figure, a depth rating, or a certification for open water use specifically. Treat every retention claim in the feature bullets as the manufacturer's, not a measurement.

1. Alpine WaterSafe — Best overall

The WaterSafe is the only pick here built around hearing your surroundings while sealing water out, which is why it leads for group open water swims.

Best for: swimmers who need to hear a coach or safety kayaker Skip it if: you want a rotation of colour-coded spares

Alpine ships the WaterSafe with M and L sizes in the same box, which is the only pick in this set to bundle two sizes for one wearer to switch between. The retention feature is what Alpine calls the HydroWing: a flexible wing that Alpine says keeps a soft seal during heavy wipeouts. The hear-through element is unusual in this category. Alpine claims the plug lets a swimmer hear a coach, friends and surroundings, which is a real design trade-off against maximum isolation. For open water swimming in a group, that is the trade-off you want.

The plug is one pair per box, so a swimmer who loses one in a lake is out of the water until a replacement arrives. This is also the most expensive pick here and sells the slowest of the five, which is what the price position buys: a specialised design rather than a bulk pack. There is no decibel rating in the listing and no depth figure.

Pros:

• HydroWing flange design for retention in chop
• M and L sizes bundled in one box
• Hear-through claim aimed at group swims
• Reusable silicone with washable body
• Only pick in the set targeting on-water and in-water use

Cons:

• Only one pair, so a lost plug ends the session
• The most expensive pick in this set
• No published noise reduction figure

2. HIGAHY Swimming Ear Plugs — Best budget pick

Four pairs of one-piece silicone at the cheapest position in the set, which makes this the sensible starter kit for a household.

Best for: a household sharing plugs across pool and open water sessions Skip it if: you need a wing or flange to lock into place under chop

HIGAHY ships four pairs in black, blue, yellow and green, and this is the cheapest pick in the set. The design is what HIGAHY calls a shark-fin shape in one-piece silicone, with what the listing describes as a four-layer barrier against water. Weight in the box is 1.45 oz across the four pairs and cases. The model number is QGJ-4.

For a family or a swim group where plugs migrate between bags, four colour-coded pairs solves the "whose are these?" problem cleanly. Every pair ships with its own case, which is the difference between a plug that lasts a season and a plug that dies in a wet kit bag.

The trade-off is retention design. The shark-fin body is a contoured plug, not a flanged or winged one, and the listing does not describe a locking flange like the Mack's or the Alpine. For flat pool swims and moderate open water, that is fine. For breaking waves or a competitive open water start, a flanged design is a safer bet. There is no decibel or depth rating in the listing.

Pros:

• Four pairs and four cases in the box
• Cheapest of the five picks
• Colour coding across users
• One-piece silicone, reusable and washable
• Listed weight of 1.45 oz for the full set

Cons:

• No flange or wing for retention under chop
• Retention claims are the manufacturer's only
• Sells more slowly than the top budget option in this set

3. Mack's AquaBlock — Best large-capacity

A triple-flange silicone plug with a Flex Stem, shipped as 6 count in a single case, from a brand that has sold swim plugs for decades.

Best for: regular swimmers who lose plugs mid-season Skip it if: you swim in a group and need to hear commands clearly

The AquaBlock is a pre-molded flanged design with three tiers of silicone on the plug body. Mack's calls the material SuperSeal Ultra Soft Silicone and credits the Flex Stem with allowing a more customised fit. The box holds 6 count, which is 3 pairs in one case. Listed dimensions are 0.62 x 5 x 2 in, weight is 1.06 oz, model number 312.

Triple-flange plugs seat differently to smooth cones. Each flange acts as a separate seal, so the plug tends to stay put through a tumble turn or a duck-dive, and that translates well to open water. Mack's says the silicone will not deteriorate like plastic and that the plug is washable and latex-free.

Two things to weigh. First, this is a fully sealed design, so it does not offer hear-through the way the Alpine does. A group swimmer misses the whistle. Second, the 6 count is one colour (purple) in one case, so there is no rotation across users the way the four-colour packs offer. The trade-off is capacity for a single swimmer against variety for several. Only two sellers list this one, which is worth knowing if you like backups.

Pros:

• Triple flange for retention
• 6 count in the box for a single swimmer
• Established swim earplug brand
• Flex Stem for fit adjustment
• Latex-free silicone

Cons:

• Sealed design, no hear-through claim
• One colour, no user rotation
• Only listed by two sellers

4. QQJOYCCI Waterproof Swimming Ear Plugs — Runner-up

Four pairs of silicone with a mesh core layer, at the second-highest price position, which puts it between the budget four-packs and the specialist Alpine.

Best for: swimmers who want a spare pair in every kit bag Skip it if: you want a published decibel rating or a triple flange

QQJOYCCI ships four pairs in black, blue, orange and green, each with its own case. The listing describes a waterproof mesh layer inside the core of each plug, which is a different construction to the solid silicone bodies on the HIGAHY and the FNGXX. Whether that mesh actually changes the seal in open water is not something the listing quantifies.

Retention is described as "fit snug into the curves of your ear", which is a contoured design rather than a flange or a wing. The plug is premium silicone in QQJOYCCI's words, and the four cases mean plugs can live in a swim bag, a beach bag, a car and a locker without ever meeting.

The trade-off against the HIGAHY four-pack is price: this pick sits at the fourth position for cost against HIGAHY's first, for a broadly similar four-pair layout. What you get for the difference is the mesh core layer, and whether that is worth it depends on how much stock you put in the claim, which the listing does not back with a figure. Against the Alpine, this is a rotation kit rather than a specialist hear-through design.

Pros:

• Four pairs, four cases
• Mesh core layer inside each plug
• Colour coding across users
• Silicone body, reusable and washable
• Wide use case: swimming, surfing, canoeing

Cons:

• No flange or wing for chop
• Premium price position for a contoured (not flanged) design
• No decibel or depth rating in the listing

5. FNGXX Swim Earplugs — Best value multi-pack

Three pairs of cochlear-shaped silicone in the second-cheapest position, and the fastest-selling of the five in this set.

Best for: families rotating plugs across ages and sessions Skip it if: you want a hear-through design for group swims

FNGXX ships 3 pairs with 3 storage cases. The listing describes the shape as designed around the structure of the human cochlea, which is FNGXX's way of saying the plug is contoured to follow the ear canal curve rather than sitting as a straight cone. Material is described as super soft silicone, and the plug is aimed at adults and teens 14+.

Of the five picks, this one is the fastest seller in its category, and it sits second-cheapest by price position. That combination is what puts it here as the value pick rather than the outright cheapest: for the small step up from the HIGAHY, you get a shape that some ears will seat more comfortably, at a price that still undercuts the Mack's and the two premium picks.

The limits are the same as the other contoured multi-packs. No flange, no wing, no hear-through, no decibel figure. Only one seller stocks it, so if that seller goes out of stock the pack is not easy to replace. And three pairs is a smaller starter kit than the HIGAHY or QQJOYCCI four-packs, though bigger than the Alpine's single pair.

Pros:

• Cochlear-contoured shape
• Three pairs and three cases
• The fastest seller in this set
• Second-cheapest price position
• Reusable, washable silicone

Cons:

• No flange or wing for open water chop
• Only one seller listed
• Three pairs, fewer than the four-pack picks

Silicone shapes: flanged, cochlear, shark fin or wing?

Every pick here is silicone, but the shape of the silicone is what actually decides retention in open water. Four shapes appear in this set:

• Flanged (Mack's AquaBlock): a body with three separate silicone tiers stacked down the plug. Each tier seals against the canal wall independently. If one breaks seal on a duck-dive, another still holds.
• Winged (Alpine WaterSafe): a flange plus a flexible wing that anchors against the outer ear. Alpine says it holds through heavy wipeouts. The other four picks do not have this feature.
• Cochlear-contoured (FNGXX): a curved body shaped to follow the ear canal. Comfortable, but with only one sealing point.
• Shark fin (HIGAHY): a fin-shaped body that sits in the concha with a stem into the canal. Comfortable, contoured, but again a single seal.

If you are choosing on retention for open water, the flanged and winged designs are the strongest bet. If you are choosing on comfort for a longer pool swim, a contoured design often wins. None of the listings publishes a leak test, so what you have is the shape and the manufacturer's language, not a measurement.

How many pairs do you really need?

Count matters more than price for anyone who swims regularly. Here is what the five picks give you:

• Alpine WaterSafe: 1 pair, M and L sizes in the box
• HIGAHY: 4 pairs
• Mack's AquaBlock: 6 count, which is 3 pairs
• QQJOYCCI: 4 pairs
• FNGXX: 3 pairs

I lose about one earplug per season, sometimes more if I swim from a boat. Three shipping options give you three or more pairs; only the Alpine ships as a single pair. That is the argument for the multi-packs even when the specialist plug fits your use case better: a four-pair box with a case per pair outlives a single premium pair by a full season for most swimmers.

The counter-argument is that a single well-designed plug you actually wear beats three cheaper plugs sitting in a drawer. If you have found a fit that works, buy that fit and buy a second box for spares.

What the listings do not tell you

Three things worth knowing that you will not find in any of the five product pages.

First, none of these listings publishes a noise reduction rating in decibels. Some swimming earplugs do, some don't. If a specific dB figure matters to you, none of these five picks quantifies it.

Second, none publishes a depth or pressure rating. For surface swimming, that is not usually a problem. For anyone planning to duck-dive or freedive with plugs in, understand that a plug sealing a closed air pocket can hurt your ears at depth, and no listing here says otherwise.

Third, none of these plugs is described as custom-moulded. Custom plugs from an audiologist fit differently to off-the-shelf silicone. The picks here are stock designs across a small range of sizes: Alpine ships M and L, the rest ship one size. If your ears sit outside the average, custom is a real option to weigh against any of these.

The verdict

If you swim in a group or need to hear a safety kayaker, the Alpine WaterSafe wins on design intent alone. It is the only pick here that ships M and L sizes for one wearer, the only one built around a wing-shaped retention feature Alpine says holds through wipeouts, and the only one whose listing describes hearing your surroundings as a design goal rather than a compromise. The cutoff is whether hear-through matters to your use case. Above it, buy the Alpine.

Below it, buy on count. The Mack's AquaBlock gives you 6 count in one box with a triple-flange design that seats hard for solo lake swims. The HIGAHY four-pack is the cheapest way into swim plugs for a household, and the FNGXX three-pack sits a small step up in a cochlear-contoured shape.

If you swim alone with a tow-float, the AquaBlock's triple flange is the stronger seal. If you swim with a squad, the Alpine's wing plus hear-through is the safer choice. Both are honest picks for open water; they answer different questions.

FAQ

Are these earplugs designed specifically for open water swimming?

Designed specifically for open water swimming, none of these five is marketed exclusively for lakes or the sea. They are silicone swim earplugs that can be used in open water. The Alpine WaterSafe listing names on-water and in-water activities from pool lanes to the open ocean. The other four are general swim earplugs by design intent.

Is the Alpine WaterSafe worth the price over the four-pair packs?

Worth the price over cheaper four-packs depends on one question: do you need to hear a coach, a whistle or a safety kayaker while swimming? If yes, the Alpine is the only pick in this set with a hear-through design and a HydroWing retention feature. If you swim alone with a tow-float and never need to hear surroundings, a flanged 6 count box like the Mack's covers you for longer.

Do any of these plugs have a decibel or noise reduction rating?

Decibel or noise reduction ratings are not published in any of the five listings. If a specific dB figure matters to your buying decision, none of these picks quantifies it. The Alpine listing frames the plug around letting sound through, not blocking it; the other four listings describe water sealing rather than noise reduction. Treat any noise claim as unquantified.

Mack's AquaBlock or Alpine WaterSafe for open water swimming?

Mack's AquaBlock or Alpine WaterSafe splits along one line. The AquaBlock is a triple-flange sealed design in a 6 count box, best for a solo swimmer who wants the tightest seal. The WaterSafe is a winged design with M and L sizes and a hear-through claim, best for a group swimmer who needs to hear a coach. Both are silicone, both are reusable.

What is the biggest pitfall when buying swim earplugs?

The biggest pitfall is buying a plug with no retention feature for open water use. A smooth cone or a shallow contour that fits fine in a pool falls out on a duck-dive or a chop hit. Look for a flange, a wing or a locking stem in the listing images. The Alpine WaterSafe and the Mack's AquaBlock are the two picks here with that kind of retention design.

Pick the plug that answers the question you actually have. For a group open water session with a coach or a kayaker in earshot, the Alpine WaterSafe is the right default because it is the only pick built around hearing while sealing. For a solo swimmer who wants the strongest seal and the most spares in one box, the Mack's AquaBlock's triple flange and 6 count is the honest alternative. The multi-packs are for households, not solo season swimmers. Whatever you choose, put the case in your kit bag on day one: a silicone plug loose in a wet bag is a plug you will not find again.

Last updated: September 7, 2026. Product availability re-checked.

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