Metonic Outdoor lens surface coating

48-hour seawater immersion tested

48-hour protection against seawater, sweat and oil for mirrored lenses.

Metonic Coating forms a protective layer over the mirrored lens finish. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and improve durability during repeated outdoor use.

Shop Metonic See how it helps

48-hour seawater test Oil releases easier Longer lens durability

Why it matters

Mirrored lens coatings need protection from seawater, sweat and oil to help prevent peeling and delamination.

Seawater, sweat and oil can attack mirrored lens coatings and lead to peel-off or delamination. Metonic Coating adds a protective layer that withstands these exposures for 48 hours, improving durability for coastal days, watersports, running and repeated outdoor use.

Its surface helps droplets, salt and oil release more easily, reducing stubborn residue on the lens and helping clarity and coating performance last longer in everyday use.

What it helps with

Core strength: 48-hour resistance to seawater, sweat and oil, helping reduce mirrored-coating peel-off and delamination.

Long seawater exposure

Lab-tested with 48 hours of seawater immersion, with no lens damage after extended seawater exposure.

Oil releases easier

Skin oil, sweat and fingerprints are less likely to cling stubbornly to the lens, so regular wipe-downs feel smoother.

Droplets and salt clear faster

Droplets and salt residue clear from the surface more easily, reducing how long outdoor build-up sits on the lens.

Longer lens durability

With less stubborn residue and less repeated rubbing during cleaning, the coating and optical clarity can stay in better condition for longer.

Best-practice care

Pair it with simple care for longer-lasting lens performance.

Metonic already gives the lens strong surface protection against seawater, salt and oil. After outdoor use, these three simple steps help reduce lingering grit and oil so the lens stays clearer for longer.

Rinse first
Rinse the sunglasses under tap water to remove dust, grit and surface debris.
Dry with microfiber
Use a microfiber cloth or the pouch provided to dry and clean the lenses and frame. Avoid air drying, as water marks may remain.
Use isopropyl alcohol for oil
For excessive oil, apply isopropyl alcohol at 75% or below to the microfiber cloth, then wipe gently. Avoid soap or dish soap to help keep the coating stable for longer.

Where it fits

Useful in the places 2nu sunglasses are actually worn.

Running

Sweat, skin oil and quick clean-downs after effort.

Water

Sea air, spray and salt around boats, boards and coastlines.

Hiking

Humid trails, dust and long hours outside.

Daily outdoor

Commuting, driving, handling marks and regular lens care.

FAQ

Practical questions about Metonic coating.

What is Metonic coating?

Metonic Coating is a protective layer over 2nu mirrored lens finishes. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and extend durability.

How do I make Metonic lenses last longer?

Metonic already gives the lens long seawater durability and oil-release surface protection. To help performance last longer, rinse away salt, dust and grit after outdoor use, then dry with a microfiber cloth or the pouch provided.

Does Metonic help around seawater?

Yes. Metonic Coating withstands seawater, sweat and oil exposure for 48 hours. Its protective layer helps reduce mirrored-coating peel-off and delamination during repeated outdoor use.

How should I clean oil from the lens?

Rinse away dust and grit first. For heavier oil, apply isopropyl alcohol at 75% or below to a microfiber cloth and wipe gently. Avoid soap or dish soap to help keep the coating stable for longer.

Which 2nu lenses use Metonic?

All 2nu sunglass lenses include Metonic Coating, providing a protective layer that withstands seawater, sweat and oil exposure for 48 hours.

Ready to choose

Choose outdoor sunglasses built for seawater, oil and longer-lasting clarity.

Shop Metonic

Hexachroma: flagship polarized clarity with Metonic coating

Fancy™ Sunglasses
FFMBKOE-HEX

UV400 protection blocks UVA and UVB rays up to 400 nm, the range most relevant to daily outdoor sun exposure. It is the baseline protection in 2nu sunglasses, so your eyes are protected while the lens technology handles glare, contrast, and comfort.

Hexachroma™ is 2nu’s outdoor light-management lens technology. Typical polarized lenses mainly reduce glare from one direction. Hexachroma™ is tuned to manage more complex outdoor reflections from seawater, wet roads, metal grates, glass, and concrete, reducing harsh glare while keeping road texture, water layers, shadow detail, and colour contrast easier to read. The goal is not to make everything darker; it is to keep vision clearer, steadier, and more natural outdoors.

Metonic Coating forms a protective layer over the mirrored lens finish. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and improve durability during repeated outdoor use.

FlexFoam™ is 2nu’s flexible frame construction for comfort and stability. It gives the frame a more forgiving feel against the head and face, helping reduce pressure during long wear while keeping the sunglasses secure for outdoor movement.

FLOAT MAX is built for water use. The frame is designed to stay afloat if dropped in water, helping reduce the chance of losing your sunglasses during paddling, boating, beach training, fishing, or water sports.

Fancy: 53-20-138; total width 142 mm.
Zealot: 60-18-138; total width 145 mm.
Size - Normal is the standard 2nu fit class for most everyday head shapes. Fancy gives a classic standard-frame feel, while Zealot gives more front coverage but still sits in the normal fit direction.
Both use flexible frame structure to stay comfortable if your face is slightly wider than average.

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per
Halo™ Sunglasses
HFMBKOE-HEX

UV400 protection blocks UVA and UVB rays up to 400 nm, the range most relevant to daily outdoor sun exposure. It is the baseline protection in 2nu sunglasses, so your eyes are protected while the lens technology handles glare, contrast, and comfort.

Hexachroma™ is 2nu’s outdoor light-management lens technology. Typical polarized lenses mainly reduce glare from one direction. Hexachroma™ is tuned to manage more complex outdoor reflections from seawater, wet roads, metal grates, glass, and concrete, reducing harsh glare while keeping road texture, water layers, shadow detail, and colour contrast easier to read. The goal is not to make everything darker; it is to keep vision clearer, steadier, and more natural outdoors.

Metonic Coating forms a protective layer over the mirrored lens finish. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and improve durability during repeated outdoor use.

FlexFoam™ is 2nu’s flexible frame construction for comfort and stability. It gives the frame a more forgiving feel against the head and face, helping reduce pressure during long wear while keeping the sunglasses secure for outdoor movement.

FLOAT MAX is built for water use. The frame is designed to stay afloat if dropped in water, helping reduce the chance of losing your sunglasses during paddling, boating, beach training, fishing, or water sports.

Halo: 56-18-138; total width 142 mm.
Normal - Smaller is a compact and secure fit for standard to narrower faces. It is useful if regular sunglasses often feel slightly loose, or if you prefer a closer fit for movement.
The FlexFoam™ frame helps the fit feel secure without feeling hard or sharply compressed.

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per
Zealot™ Sunglasses
ZFMBKOE-HEX

UV400 protection blocks UVA and UVB rays up to 400 nm, the range most relevant to daily outdoor sun exposure. It is the baseline protection in 2nu sunglasses, so your eyes are protected while the lens technology handles glare, contrast, and comfort.

Hexachroma™ is 2nu’s outdoor light-management lens technology. Typical polarized lenses mainly reduce glare from one direction. Hexachroma™ is tuned to manage more complex outdoor reflections from seawater, wet roads, metal grates, glass, and concrete, reducing harsh glare while keeping road texture, water layers, shadow detail, and colour contrast easier to read. The goal is not to make everything darker; it is to keep vision clearer, steadier, and more natural outdoors.

Metonic Coating forms a protective layer over the mirrored lens finish. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and improve durability during repeated outdoor use.

FlexFoam™ is 2nu’s flexible frame construction for comfort and stability. It gives the frame a more forgiving feel against the head and face, helping reduce pressure during long wear while keeping the sunglasses secure for outdoor movement.

FLOAT MAX is built for water use. The frame is designed to stay afloat if dropped in water, helping reduce the chance of losing your sunglasses during paddling, boating, beach training, fishing, or water sports.

Fancy: 53-20-138; total width 142 mm.
Zealot: 60-18-138; total width 145 mm.
Size - Normal is the standard 2nu fit class for most everyday head shapes. Fancy gives a classic standard-frame feel, while Zealot gives more front coverage but still sits in the normal fit direction.
Both use flexible frame structure to stay comfortable if your face is slightly wider than average.

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Regular price $5,200.00 TWD

Regular price Sale price $5,200.00 TWD
Unit price per

Fancy™ Sunglasses

FFMBKOE-HEX

$5,200.00 TWD

Halo™ Sunglasses

HFMBKOE-HEX

$5,200.00 TWD

Zealot™ Sunglasses

ZFMBKOE-HEX

$5,200.00 TWD

TVO Pro: focused polarized glare control with Metonic coating

Fancy™ Sunglasses
FFMBKOE-TP

UV400 protection blocks UVA and UVB rays up to 400 nm, the range most relevant to daily outdoor sun exposure. It is the baseline protection in 2nu sunglasses, so your eyes are protected while the lens technology handles glare, contrast, and comfort.

Metonic Coating forms a protective layer over the mirrored lens finish. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and improve durability during repeated outdoor use.

FlexFoam™ is 2nu’s flexible frame construction for comfort and stability. It gives the frame a more forgiving feel against the head and face, helping reduce pressure during long wear while keeping the sunglasses secure for outdoor movement.

Polarized lenses reduce strong reflected glare from water, glass, wet roads, and other bright surfaces. They are useful outdoors, but typical polarized lenses can sometimes make phone, watch, dashboard, or navigation screens black out or look uneven.

Fancy: 53-20-138; total width 142 mm.
Zealot: 60-18-138; total width 145 mm.
Size - Normal is the standard 2nu fit class for most everyday head shapes. Fancy gives a classic standard-frame feel, while Zealot gives more front coverage but still sits in the normal fit direction.
Both use flexible frame structure to stay comfortable if your face is slightly wider than average.

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per
Halo™ Sunglasses
HFMBKOE-TP

UV400 protection blocks UVA and UVB rays up to 400 nm, the range most relevant to daily outdoor sun exposure. It is the baseline protection in 2nu sunglasses, so your eyes are protected while the lens technology handles glare, contrast, and comfort.

Metonic Coating forms a protective layer over the mirrored lens finish. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and improve durability during repeated outdoor use.

FlexFoam™ is 2nu’s flexible frame construction for comfort and stability. It gives the frame a more forgiving feel against the head and face, helping reduce pressure during long wear while keeping the sunglasses secure for outdoor movement.

Polarized lenses reduce strong reflected glare from water, glass, wet roads, and other bright surfaces. They are useful outdoors, but typical polarized lenses can sometimes make phone, watch, dashboard, or navigation screens black out or look uneven.

Halo: 56-18-138; total width 142 mm.
Normal - Smaller is a compact and secure fit for standard to narrower faces. It is useful if regular sunglasses often feel slightly loose, or if you prefer a closer fit for movement.
The FlexFoam™ frame helps the fit feel secure without feeling hard or sharply compressed.

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per
Cogs™ Sunglasses
CFMBKOE-TP

UV400 protection blocks UVA and UVB rays up to 400 nm, the range most relevant to daily outdoor sun exposure. It is the baseline protection in 2nu sunglasses, so your eyes are protected while the lens technology handles glare, contrast, and comfort.

Metonic Coating forms a protective layer over the mirrored lens finish. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and improve durability during repeated outdoor use.

FlexFoam™ is 2nu’s flexible frame construction for comfort and stability. It gives the frame a more forgiving feel against the head and face, helping reduce pressure during long wear while keeping the sunglasses secure for outdoor movement.

Polarized lenses reduce strong reflected glare from water, glass, wet roads, and other bright surfaces. They are useful outdoors, but typical polarized lenses can sometimes make phone, watch, dashboard, or navigation screens black out or look uneven.

Cogs: 55-19-138; total width 145 mm.
Normal - Larger is a relaxed fit for standard to slightly wider faces. Choose it if regular sunglasses often press at the temples, feel too narrow, or sit too close to your eyes.
Cogs gives a little more room while the soft frame material helps reduce pressure marks during long wear.

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per
Ovo™ Sunglasses
OFMBKOE-TP

UV400 protection blocks UVA and UVB rays up to 400 nm, the range most relevant to daily outdoor sun exposure. It is the baseline protection in 2nu sunglasses, so your eyes are protected while the lens technology handles glare, contrast, and comfort.

Metonic Coating forms a protective layer over the mirrored lens finish. It withstands seawater, sweat and oil exposure for 48 hours, helping reduce coating peel-off and delamination and improve durability during repeated outdoor use.

FlexFoam™ is 2nu’s flexible frame construction for comfort and stability. It gives the frame a more forgiving feel against the head and face, helping reduce pressure during long wear while keeping the sunglasses secure for outdoor movement.

Polarized lenses reduce strong reflected glare from water, glass, wet roads, and other bright surfaces. They are useful outdoors, but typical polarized lenses can sometimes make phone, watch, dashboard, or navigation screens black out or look uneven.

Ovo: 57-19-138; total width 149 mm.
Size - Larger / Wide Fit is for wider faces or larger head circumference. It is the safest direction if regular frames often feel tight, pinch at the temples, or create headaches after longer wear.
Ovo gives 2nu’s widest frame structure while the flexible material helps the frame sit more naturally.

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per

Regular price $4,200.00 TWD

Regular price Sale price $4,200.00 TWD
Unit price per