One such company is Purple. While no longer online-only, with its mattresses also being sold in-store, Purple's beginnings and its positive reputation owe much to its unique GelFlex Grid layer.

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You’ve only just got used to hearing about 4K TV and now some people are talking about 8K. But what the hell is it? What makes 8K different to 4K? And do you need it? Or is it worth waiting a while ...

She was especially impressed by how well this purple shampoo neutralized the brassy tones in her hair and gave it a healthy sheen, almost as though she’d spritzed on one of our favorite shine ...