Polarised vs UV400: What's the Difference?
You'll see both words on sunglasses, and they do different jobs.
UV400 is about protection
It means the lenses block UV light up to 400 nanometres, which covers 100% of UVA and UVB rays. You can't see or feel UV, so this is the part that protects your child's eyes.
Polarised is about comfort
Polarised lenses cut glare, the harsh reflected light that bounces off water, sand, wet roads and car windows. Less glare means less squinting and clearer vision.
Why it matters for kids
A lens can be dark without blocking UV. Dark lenses actually make pupils open wider, so cheap tinted lenses can let in more UV, not less. Always check for UV400. Polarisation is the bonus that makes them comfortable enough to keep on.
See the difference yourself
Every pair of Baby Sunnies comes with a secret fish card. Look at it through the lenses and a hidden fish appears. Take them off and it's gone. That's polarisation at work.
All our sunglasses are both UV400 and polarised. Shop baby sunglasses or kids sunglasses.
Read next: When can babies wear sunglasses?
