Under Armour Challenger Knit Trousers Mens The Under Armour Challenger Knit Trousers are designed with an elasticated waistband, drawstring fastening, zip up ankle cuffs, two pockets and are crafted from a durable knit fabric that is comfortable and warm, breathable panels for ventilation and a fitted design that sits close to the skin without restricting movement. Completed with Under Armour branding. > Men's track pants > Elasticated waistband > Drawstring fastening > Zip up ankle cuffs > 2 pockets > Knitted fabric > Fitted > Under Armour branding > Body: 90% polyester, 10% elastane > Back yoke: 100% polyester > Machine washable > Keep away from fire