Some sunglasses complete an outfit.
The right sunglasses do that and protect your eyes.
You’ve probably seen the term UV400 before, but if you’ve ever wondered what it actually means, you’re not alone. It sounds technical, but the idea is simple—and important.
So, what is UV400?
UV400 means the lenses are designed to block ultraviolet rays up to 400 nanometres, including both UVA and UVB rays.
In simpler words, it means your sunglasses are helping protect your eyes from almost all harmful UV radiation from the sun.
That matters more than most people realize.
Why does UV protection matter?
We usually think about sun protection for our skin, but our eyes need protection too.
Too much exposure to UV rays can contribute to:
- eye strain and discomfort
- increased sensitivity to bright light
- irritation and dryness
- long-term damage from repeated sun exposure
A good pair of sunglasses should not just make things look darker. It should help protect your eyes while you’re out in the sun.
Dark lenses do not always mean better protection
This is one of the biggest misconceptions.
A darker lens may feel like it offers more protection, but lens colour and UV protection are not the same thing.
You can have:
- dark lenses with poor UV protection
- lighter lenses with excellent UV protection
What matters is not how dark the lens looks—it’s whether the sunglasses are properly labelled UV400.
UVA and UVB: what’s the difference?
You do not need to memorize the science, but it helps to know this:
- UVA rays are linked to long-term sun exposure effects
- UVB rays are more intense and are often associated with direct sun damage
A pair of UV400 sunglasses helps block both, which is why the label is worth paying attention to.
When do you need UV400 sunglasses?
Not just on beach days.
UV protection matters during:
- everyday city wear
- driving
- holidays and travel
- outdoor lunches and walks
- poolside afternoons
- any bright day, even when it doesn’t feel extremely hot
Sun exposure builds up over time, so everyday protection is a smart habit.
How to choose the right sunglasses
When shopping for sunglasses, look for more than just shape and style.
A good pair should offer:
1. UV400 protection
This is non-negotiable.
2. A shape that suits your face
The best sunglasses protect your eyes and feel good on you.
3. Comfort
If they are uncomfortable, you are less likely to wear them regularly.
4. A style you’ll actually reach for
Protection only works if your sunglasses make it out the door with you.
Style and protection should go together
At Candy Crab, we believe sunglasses should do both.
They should elevate your look, flatter your features, and feel like a natural part of your day—but they should also offer the kind of protection your eyes actually need.
Because good sunglasses are not just an accessory.
They are a little bit of style, a little bit of confidence, and a lot of everyday practicality.
The takeaway
If you remember only one thing, let it be this:
UV400 means your sunglasses help block harmful UVA and UVB rays up to 400 nanometres.
That small label makes a big difference.
So the next time you choose a pair, don’t just look at the frame.
Check what it does for your eyes, too.
Sun out. Candy Crab on.