Nestled in the heart of Derbyshire, John Smedley has been crafting the finest knitwear since 1784. These 'Henning' sweatpants are made from 24-gauge merino wool and have a comfortable elastic drawstring waistband. Wear yours with the matching top.Lower Impact Materials. This product is made using at least 50% lower-impact materials or ingredients. Find out more about our Consciously Crafted criteria here.