Sunglasses season has arrived – the key factors to look for and the best styles to shop now

With the sunshine coming back this weekend and a mini heatwave next week – these are the top picks of sunglasses for the season. (Picture: Metro/Getty)
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The moment we catch a glimmer of the sun’s rays, there’s one item we reach for – a pair of sunglasses (and SPF, obviously). Even if it’s a little fresh o