When you are out on the trail you want something that will hold up and be long lasting. Smith and Edwards make these tough and durable saddle pack bags in their in-house tack shop, with the materials and quality they would want themselves. They use a heavy nylon, also known as bear cloth, that is durable and won't rot or mildew. | Smith and Edwards Western Heavy-Duty Saddle Pack Bag in Orange | Size 28" x 20" x 9"