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As anyone who went rafting down the Grand Canyon in the miserable years before 1984 will tell you, finding the right footwear for high-octane adventures was a nightmare. Trainers would get soaked, and flip-flops would flip off. But just when all hope was thought to be lost, a geophysicist and river guide had an ingenious brain-wave — why not attach a Velcro watch-strap to a flip-flop sole? And just like that, the Teva sandal was born.

And you don’t have to be careening down The River Wild with Kevin Bacon to feel the benefits of these things. They’re light, they’re comfortable (with or without socks) and if your summer holidays consist of scrambling about, lighting campfires and eating quinoa out of an enamel bowl, they’re pretty much perfect.