The Marucci CAT9 Baseball Bat is designed for adult players, featuring a 31-inch length and 21-ounce weight with a 2 3/4-inch barrel diameter. The bat is made of metal alloy in a white color scheme. It is part of the CAT9 series, specifically the Marucci CAT9 model, and is unsigned. Ideal for baseball sport/activity use, this non-vintage bat is from the brand Marucci.