Brax Hi Flex Stretch Cords. Did Brax just reinvent the Corduroy trouser? You better believe it. Using a blend of Cotton and Elastane these Cord trousers stretch and move freely, look the part and withstand demanding wear. Dress up with a shirt and sweater or pair down with trainers and a t-shirt, these Cooper Stretch Cords are extremely versatile and bring an extra something to any outfit. 97% Cotton, 3% Elastane Stretch Material Modern Fit.