There are a few closely-guarded secrets in the fashion sphere that have remained swept under the rug simply because the style set, on the whole, is too tight-lipped to leak them. Never one to gatekeep a secret worth gossiping about though, I hereby declare it my duty to disclose the one simple staple that keeps fashion editors simultaneously warm and stylish – no small feat during the no-man’s-land of the bleak midwinter.

May I introduce you to Uniqlo’s HeatTech range which spans socks, leggings and T-shirts that are, according to the brand, designed to be “so warm that they make “multiple layers of clothing … a thing of the past”. Since its launch in 2003, Uniqlo has sold more than 1 billion pieces of HeatTech, while claiming that the fabric used in these items “would stretch 700,000km, or 17.5 times around the globe”.

Uniqlo has sold over 1 billion pieces from this range that fashion editors swear by