One side of the ball is flat. It's for practicing things like the screw pass. It can't be used in games. It seems to be a ball used for practicing alone by throwing it against a wall. I'm selling it because it's been unused. The SHADOW BALL comes in a variety of colors, perfect for rugby practice. - Brand: SHADOW - Model Name: SHADOW BALL - Colors: Gray/Orange/Green - Colors: Gray/Yellow/Green Thank you for looking.