Black Elastic Trousers. Fabric Composition: 100% Polyester. Approximate Length: 78cm. Washing Instructions: 30 Degree Wash. These black elastic back trousers are the perfect addition to your wardrobe. Designed for ultimate ease, these trousers feature a soft elastic waistband that provides a flexible and comfortable fit, making them perfect for all-day wear. Pair them with a crisp blouse or a fitted top and the matching blazer for a chic, sophisticated look that transitions effortlessly from day to night.