These Track Pants are made from GRAMICCI DURABLE NYLON, which has a dry touch and washer feeling, as if product washed. They have excellent water repellency and are easy to dry, making them suitable for field use by the river or other bodies of water. With their slightly loose silhouette, they can also be tightened, and the gussets at the hems are opened and closed using zippers. Durable Nylon Fabric