For centuries, the lush banks of the River Nile have nourished civilisations. The rich flora has also been key in the farming of one of the most sought-after natural yarns, Egyptian cotton. Thanks to its long-staple fibres, it’s softer and more durable than other strains, making it a superb base for undergarments, including the sleek Eureka socks from Doré Doré. Colour: blue