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Do more expensive pairs better protect your eyes?
Whether you’re hoping to catch some rays here in the UK or heading abroad for summer sun, you’ll want to think about protecting your eyes from the harmful UV in those rays. But how much do you need to spend on sunglasses to keep you safe?

Listener Wayne got in touch wanting to know the answer. He also wondered whether darker tints better protect his eyes, and asked what the term ‘polarised’ means, and whether he should ensure any new pair are exactly that?

Greg Foot sets out to investigate, testing sunglasses ranging in price from £2.50 to over a hundred pounds - do they deliver on their UV protection? The results are surprising...

This series, we’re testing your suggested wonder-products. If you’ve seen an ad, trend or fad and wonder if there's any evidence to back up a claim drop us an email to sliced.bread@bbc.co.uk or you can send us a voice note to our new WhatsApp number: 07543 306807

PRESENTER: Greg Foot
PRODUCER: Simon Hoban