CASHMERE, of all fibres, has endured as the gold standard of knitwear for very good reason. Harvested from the soft undercoat of cashmere goats raised across the high-altitude plains of Mongolia and China, the fibre is finer than human hair and naturally heat regulating. It’s so light against the skin, you can barely feel yourself wearing it. Until you realise it’s the middle of winter and you don’t feel the cold at all.