Swimming trunks by Jack Wills, Drawstring waistband, Side pockets, Single back pocket, Machine wash, 55% Cotton, 45% Nylon. 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.