Sometimes referred to as Scottish Estate Tweeds or in the United States of America as Gun Club Checks and are synonymous with Scottish district checks. These distinctive woollen tweeds, with bold but sometimes subtle checks were, and continue in some cases, to be woven in the Highlands of Scotland. Originally designed as the livery for the landowners and their estates they identify the people who live and work in the same area whether they are related or not. Modified versions of glen checks were adopted by some individual regiments in the British army and often worn by officers when out of uniform as ‘plain clothes’, sometimes referred to as mufti. The word glen is Scottish for valley. See district checks and tartan.