The Ice Age Fleece combines recycled sheep's wool and synthetic lab wool, asymmetric piece-by-piece construction and “biodegradable zips”.

Vollebak, which is known for its cutting-edge design and products, said: “There’s an unspoken logic that people only design for the present day or the future. But we wanted to see if designing for the past couldn’t create just as many possibilities."

“The Ice Age Fleece is designed to recreate the feeling and performance of the soft hides worn by prehistoric man. These early designs would have worked just like a second skin, regulating your temperature in the heat and cold, while protecting you from the wind and rain. And with modern day winters around the world getting more ice age every year, we thought we’d better start designing for it.”