10 oz. double-knit polyester. It's heavy enough to be rugged and durable over the long haul. At the same time, it's light enough to ventilate and keep things from getting too hot. It stretches so as to not bind too tight. 5¼"W x 12'L. Velcro® closures.
Color choices: red, blue, forest green, purple, black, or burgundy.