The Under Armour UA Unstoppable Men's Tracksuit Bottoms feature UA Storm technology to repel water without losing breathability. They are made of lightweight, durable and comfortable elastic material with 4-Way Stretch technology for better movement. They have an elastic waistband with an internal drawstring and a functional zipper closure. Sleeve and taped back pockets with zippers and side pockets offer practical storage. They use a fluorine-free water-repellent finish.