(SGI) Snugpak, the British maker of sleeping bags and insulated clothing, has announced a change in its working hours as part of its efforts to reduce the company’s carbon footprint. From April 3 until autumn, the company will be switching to a four-day week, Monday to Thursday. The manufacturing company has concluded that the traditional short day on Fridays leads to a drop in productivity while leaving unchanged the costs and environmental impact of commuting, heating and lighting. The move has also been adopted in the larger framework of initiatives in the U.K. and other countries to increase productivity while ensuring a better work-life balance.