Latest from News Gray lenses provide stable brightness control for long periods outdoors.
Why Gray Lens Sunglasses Help Reduce Eye Fatigue During Long Outdoor Walks
Why neutral gray lenses remain popular for daily outdoor eyewear
Stories
Hexachroma, Hong Kong sunglasses, lens choice, polarized lenses, polarized sunglasses, screen visibility, UV400 sunglasses
Are Polarized Sunglasses Always Better?
Polarized sunglasses can make bright outdoor glare easier to manage, especially around water, roads and glass. But they are not automatically the best answer for every use case. The better choice depends on UV400 protection, screen readability, activity type and real fit.
Hong Kong running, humid weather running, running eyewear, running sunglasses, TryOn, UV400 sunglasses, Venti Air
How to Choose Running Sunglasses for Humid Weather
In humid weather, running sunglasses need to do more than block brightness. The right pair should stay stable under sweat, feel light after long wear, protect with UV400, and keep outdoor vision clear when light changes.
buoyant frame comfort, FlexFoam comfort, floating frame comfort, floating sunglasses fit, water sports sunglasses feel
Does Floating Frame Material Feel Different on Your Face
Many people assume floating sunglasses must feel bulky, soft, or less precise on the face. In practice, the real difference depends less on the word “floating” and more on how the frame material is engineered, balanced, and fitted for real outdoor use.
beach sunglasses lens durability, mirrored lens coastal care, mirrored lenses sea environment, mirrored sunglasses seawater, sea spray mirrored coating
Why Mirrored Lenses Struggle More in Sea Environments
Mirrored lenses often age faster in sea environments because the mirrored outer layer takes direct stress from salt residue, strong reflection, and repeated drying after spray exposure. The practical solution is not to avoid mirrored lenses entirely, but to choose better coating protection and rinse them promptly after coastal use.
anti-slip sunglasses humidity, humid tropical city sunglasses, outdoor sunglasses for sweaty weather, sunglasses for Hong Kong weather, tropical climate sunglasses fit
How to Choose Sunglasses for Humid Tropical Cities
In humid tropical cities, the main sunglasses problem is not only brightness. Heat, sweat, and constant moisture change how a frame grips your face, so a pair that feels fine indoors can become unstable outdoors.
dashboard visibility sunglasses, GPS screen blackout sunglasses, Hexachroma navigation lenses, polarized lens GPS issue, polarized sunglasses GPS readability
The Most Common Polarized Lens Issue When Using GPS
The most common GPS problem under polarized sunglasses is screen blackout or heavy dimming at normal driving angles. If navigation readability matters, lens tuning matters just as much as glare reduction.
floating sunglasses, paddle board sunglasses, paddle boarding eyewear, sunglasses that float in seawater, watersport sunglasses
Paddle Board Sunglasses: Why Floating Frames Matter First
For paddle boarding, the first real risk is not glare alone but losing your sunglasses the moment they hit the water. A frame that floats in seawater solves the problem at the source, which is why flotation should be considered before lens tint or cosmetic details.
coastal glare sunglasses, coastal sunglasses care, durable outdoor sunglasses, lens durability at the beach, seawater lens wear
Why Lens Durability Matters More Under Coastal Glare Than Most People Expect
At the coast, strong reflected light from the sea makes even small lens problems easier to notice. Once salt residue, repeated wiping, and outdoor exposure are added, lens durability becomes a real performance issue rather than a minor specification.
downhill hiking sunglasses, hiking eyewear stability, hiking sunglasses fit, stable fit sunglasses, sunglasses slipping on trail
Why Sunglasses Slipping During Hiking Matters More Downhill
Sunglasses that seem fine during easy walking can become distracting once the trail turns steep. Downhill hiking increases forward movement, vibration, and sweat, so stable fit becomes a practical safety issue rather than a small comfort detail.
downhill hiking sunglasses, hiking sunglasses movement, hiking sunglasses slipping, stable fit sunglasses, trail eyewear fit
Why Sunglasses Slipping During Hiking Matters More Downhill
Many sunglasses only reveal their fit problems when the trail turns downward. On descents, repeated impact, sweat, and head movement make small fit weaknesses much more noticeable.
dashboard visibility sunglasses, digital display compatible polarized lenses, Hexachroma, navigation screen sunglasses, polarized lens screen visibility
Why Some Polarized Lenses Keep Screens Visible Better
Not all polarized lenses behave the same around screens. If you rely on a car dashboard, phone map, or marine display outdoors, lens tuning matters more than most people expect.
coastal eyewear care, rinse sunglasses after seawater, salt residue lens care, sea exposure sunglasses, sunglasses cleaning guide
Should You Rinse Sunglasses Immediately After Sea Exposure
You should rinse sunglasses soon after sea exposure because salt residue keeps working on the lens surface even after the water evaporates. The longer it sits, the harder it becomes to remove without adding extra cleaning friction.
buoyant frames, FlexFoam, floating sunglasses, paddle board eyewear, water sports sunglasses
Why Most Sunglasses Disappear Immediately After Falling Into Water
Most sunglasses are lost in seconds after hitting the water because standard frame materials are denser than people realise. If you spend time on boats, paddle boards, or beaches, floating frame design matters before you even think about lens tint.
Leanne Szeto (Pink Boss): The Power of Pink and Unyielding Determination in Triathlon
In the world of endurance sports, athletes come in all shapes, sizes, and colors. But for Leanne Szeto, a professional Ironman triathlete and aeronautical engineer from Hong Kong (now based in Melbourne Australia), pink is the color that defines h...
In Conversation with Matt Di Masi: Embracing Challenges and Inspiring Others
Built upon common values and a fervent dedication to making a difference in our community, 2nu is proud to welcome Australian Marathon Runner Matt Di Masi as the latest 2nu Ambassador. Matt is a 2:26.34 marathon runner. Shizuoka in Japan was Matt...
A Story of Never Give Up - London Marathon 2024
I had never ran with so many runners before. I was running but I just couldn’t open up as much as I wanted to, the congestion was real and I was running on the medium stripe where I could to get some room. I started to feel happy with having the opportunity to run in such a prestigious race. This was the best Sunday long run ever
Tips
boating, Hexachroma, marine, polarized, sunglasses
Why Marine Displays Disappear Under Polarized Lenses
Quick Answer: When you look at a marine display or boat dashboard through traditional polarized sunglasses, the screen often appears completely black or heavily distorted. This happens because both the LCD screen and traditional polarized lenses use polarizing filters. When these two filters align at conflicting angles, they block the light entirely. The solution is upgrading to advanced lens technologies like Hexachroma™, which are engineered to maintain digital screen visibility without sacrificing glare reduction.
best running sunglasses, best sunglasses features for sweaty climates, humid climate sunglasses, no slip sunglasses, performance sports sunglasses, sweat resistant sunglasses
Best Sunglasses Features for Sweaty Climates: What Actually Matters Outdoors
In hot and humid conditions, sunglasses often fail not because the tint is wrong, but because sweat reduces grip, moisture affects visibility, and unstable frames become distracting. The best sunglasses for sweaty climates combine secure fit, low weight, stable optics, and practical lens protection so they remain usable when outdoor conditions become more demanding.
beach sunglasses, coastal eyewear care, glasses coating coming off, Metonic coating, sunglasses coating peeling off
Why Beach Sunglasses Age Faster Than Urban-Use Eyewear
Beach sunglasses age faster than urban-use eyewear because salt residue, sand abrasion, heat, and reflected glare combine in the same environment. This article explains why coatings wear sooner at the beach and how better product choice and rinsing habits can extend lens life.
FlexFoam, kayaking, polarized, sunglasses, water sports, 水上運動, 運動太陽眼鏡
Best Sunglasses for Water Sports: Kayaking Concerns Beyond UV Protection
When choosing sunglasses for kayaking, UV protection is only the baseline. Discover why floating frames and anti-saltwater coatings are the real game-changers for water sports enthusiasts.
digital display visibility, Hexachroma, phone screen visibility, polarized sunglasses, screen blackout
Why Phone Screens Disappear Under Polarized Sunglasses — and What to Do About It
Phone screens can disappear under polarized sunglasses when the lens filter clashes with the display’s light orientation. This guide explains why it happens, why it matters outdoors, and why Hexachroma™ is the correct 2nu solution for screen-compatible visibility.
best sunglasses for running, lightweight sunglasses for running, polarized sunglasses for running, running sunglasses, UV400 sunglasses
Best Sunglasses for Running: What Actually Matters
Discover what actually matters when choosing running sunglasses, from stability in motion to advanced lens technology. Learn why weight, fit, and UV400 protection are the keys to a better run.
anti-slip, running, running sunglasses, sports eyewear, TrueView Optics, 跑步太陽眼鏡, 跑步眼鏡, 防滑結構
Why Running Sunglasses Slip Even When Lightweight
Running sunglasses slip not because of weight, but due to footstrike vibration and sweat reducing friction. Learn why lightweight frames fail during runs and how anti-slip structures (防滑結構) solve the problem.
2nu.vision, active lifestyle, FlexFoam, floating sunglasses, hiking, lightweight eyewear, running, watersports
Are Floating Sunglasses Useful Beyond Water Sports?
Floating sunglasses offer more than just buoyancy; their lightweight FlexFoam frames provide universal comfort and a secure fit for hiking, running, and everyday active use. Discover the versatile benefits of eyewear designed for all your adventures.
coastal durability, lens care, Metonic coating, salt spray
Coastal Sunglasses Durability: What Actually Causes Faster Lens Wear?
Living near the ocean can be tough on your eyewear. Learn how invisible salt spray causes lens delamination and how to protect your sunglasses with Metonic™ coatings.
Car Display Blackout, Driving Tips, Hexachroma, Polarized Sunglasses, TVO Pro
Why Polarized Sunglasses Black Out Car Displays (and How Hexachroma™ Fixes It)
Ever noticed your car's digital dashboard go black when wearing polarized sunglasses? Discover why this happens and how 2nu's Hexachroma™ technology solves the 'blackout' effect for a safer drive.
lens care, Metonic coating, polarized sunglasses, saltwater damage, sunglasses coating, sunglasses coating peeling off, sunglasses for water sports
Why Saltwater Damages Mirrored Sunglasses Faster Than Most Users Expect
Discover why saltwater causes mirrored sunglasses to peel and scratch faster than expected. Learn about salt crystallization, chemical corrosion, and how Metonic coating protects your vision.
Why Sunglasses Slip More in High Humidity
High humidity changes skin friction before visible sweat appears, making sunglasses move more than many people expect during daily outdoor wear.
How to Choose Sunglasses for Running in Humid Weather
Humid weather changes how sunglasses feel during running. Stable grip, controlled frame weight, and balanced lens design matter more than many runners expect.
Why Amber Lens Sunglasses Improve Visual Comfort on Cloudy Outdoor Days
Amber lens sunglasses improve contrast and reduce subtle glare during cloudy outdoor walking and commuting.
Why Lightweight Running Sunglasses Matter More in Humid Weather
Lightweight running sunglasses help reduce pressure, improve frame stability, and maintain comfort during humid outdoor training.
daily walking, glare reduction, lens guide, outdoor eyewear, polarized sunglasses
Why Polarized Sunglasses Matter More During Daily Outdoor Walking
Polarized lenses help reduce reflected glare during daily outdoor walking, improving visual comfort and reducing eye fatigue in bright environments.
The Art of Performance Sunglasses Design - All You Need to Know About Comfort & Fit
Do you feel uncomfortable wearing your sunglasses during sports? Whether you're on the field, at the gym, or enjoying outdoor activities, an ill-fitting pair of sunglasses can be a major distraction. In this article, we’ll explore how sports s...
Why Sunglass Coatings Peel After Seawater & Sweat
Seawater, sweat and heat can weaken poor lens coatings. Learn why peeling happens, how to care for sunglasses, and what to look for in outdoor eyewear.
#arpansa, #UV, #UV400
What you need to know about UV protection
Before some sunglasses became fashionable spectacles, they actually got one major purpose: UV Protection. This is not very hard to achieve that even low end sunglasses would claim that they have UV400 protection. Therefore, if your sunglasses don’...
The Intricate Relationship Between UV Protection, Polarized Lenses, and Tint Darkness in Sunglasses
When it comes to choosing the right sunglasses, understanding the relationship between UV protection, polarized lenses, and tint darkness is crucial for ensuring your eyes are well-protected against the sun's harmful rays. Here's a breakdown of wh...
Performance Sunglasses Handbook
8 Practical Guidelines to pick the BEST Sunglasses for EVERY Outdoor Activities and save you 50% of your money. There’s a lot of people who look for sunglasses for outdoor activities e.g. running, hiking, cycling, fishing, kayaking…etc. would thi...
Photochromic Lenses
In the realm of sport sunglasses, technological advancements continue to redefine the way athletes perceive and engage with their surroundings. One such innovation is the photochromic lens, a dynamic solution that adapts to changing light conditio...
The Sunny Side of Style: A Guide to Polarized Sunglasses
Sun's out, shades on! But wait, not just any sunglasses—let's talk about the MVP of bright days: polarized sunglasses. Whether you're driving down the coast, casting a line into the water, or simply enjoying a sunny patio brunch, polarized lenses ...
Lens Colours
We comprehend the crucial role that lens colors play in augmenting visual performance and safeguarding athletes' eyes during diverse sports and outdoor activities. The selection of lens color transcends mere aesthetics; it profoundly influences vi...
Lens Features
Contrast enhancement To begin, let's delve into the realm of contrast and its underlying purpose. Contrast serves to deepen both shadows and the brightest areas, imparting greater dimension to visuals. This augmentation ensures that intricate deta...
Clarify some common mistakes that no sunglasses brand would tell you
In this article, we’re going to clarify some common mistakes that no sunglasses brand would tell you: The darkness level of lenses does not directly affect their ability to filter ultraviolet (UV) raysThe light transmittance and UV-filtering capab...
How does frame material and design matter?
Frames are purpose-built to serve one primary function: supporting the lens and by extension, you, through meticulous and deliberate design. Within this framework, three key elements define exceptional frame quality: material, grip, and coverage. ...
Take care of your sunnies - a very simple (but useful) guide!
Let’s share with you some tips of taking care of your sunglasses
Well-being
Blades of Oary: Four Women, One Ocean, and an Unshakable Vision
On paper, they’re four Australian women with day jobs, strong opinions, and ashared love for the ocean. In reality, they’re on a mission to make history—rowing5,000 kilometres across the Atlantic in the World’s Toughest Row. No engine. Nosail. Jus...
The Path to Clarity: Rising Above Reactivity to Find Peace
In a world filled with constant distractions, noise, and emotional triggers, how do we find clarity? How do we rise above the chaos within ourselves to make decisions that align with our truest selves? These questions are timeless, yet the answers...
The Importance of UV Protection and Sunglasses While Running
When you lace up for a run, your thoughts may be focused on pace, distance, or the music playlist that will push you to the finish line. But one essential aspect of outdoor running that's often overlooked is protecting yourself from harmful ultrav...
A Journey to Better Health: the Eight Laws of Health
Recently, I’ve found myself dealing with some unexpected health issues—feeling unwell and even struggling with some skin problems. As someone who is usually on the go and trying to balance work and family, I didn’t realize just how much my health ...
Eyes: The VIPs of Your Body - Treat Them to Some Shade!
When it comes to UV rays, our eyes are the VIPs - Very Important Pupils! Just like the skin, our eyes need a solid SPF - Superb Protection Factor. Why? Because they're 10 times more sensitive to UV than our skin. That's right, tenfold! Now, we sl...
News
Tips
Why Gray Lens Sunglasses Help Reduce Eye Fatigue During Long Outdoor Walks
Gray lens sunglasses help reduce visual fatigue by preserving natural color balance during long outdoor walking.
2nu Named Official Sunglasses Partner for Standard Chartered Singapore Marathon 2025
Singapore — [6th May, 2025] — 2nu, a leader in high-performance sunglasses designed for outdoor enthusiasts, is thrilled to announce its debut as the Official Sunglasses Partner of Standard Chartered Singapore Marathon. This marks the first time ...
Introducing Leanne Szeto, aka Pink Boss
2nu Welcomes Leanne Szeto as New Brand AmbassadorWe are excited to announce the addition of professional Ironman triathlete and aeronautical engineer, Leanne Szeto (aka Pink Boss), as our newest brand ambassador. Known for her relentless determina...
Performance Sunglasses Handbook is now available
In December last year, we have written an ultimate pro guidelines that prevent you from buying the wrong sunglasses and save your hard-earned money. It was required to subscribe to download and now we have decided to simply put it online as our mi...
Announcement: 2nu has become the official sunglasses of the Gold Coast Marathon 2024
Thrilled to announce our partnership with the Gold Coast Marathon as the official sunglasses of choice! The GCM stands as a prestigious, international event that not only encourages outdoor activities and personal challenges but also resonates dee...
