Sweat pants by Jack Wills Made from cotton rich fabric. Elasticated waistband with drawstring front. Wills logo. Ribbed cuffs. Slim fit. ABOUT JACK WILLS Jack Wills was launched in 1999 in Salcombe, Devon, designing British heritage-inspired goods for the university crowd. Influenced by the best of British, whether that's sporting history or country pursuits, Jack Wills' signature prep aesthetic makes up a high-quality collection of hoodies, sweat pants and denim. Shell: 78% Cotton, 22% Polyester.