Seven moveable sleeves identifying offensive positions on one side and defensive positions on the other Durable 18 oz vinyl Carrying bag included Size: 35' long Weight: 18 lbs The Fisher Athletic Offensive / Defensive Line-Up Marker features seven movable sleeves identifying offensive line positions on one side and defensive positions on the other. This 35' long marker is an invaluable tool for teaching proper line position and technique on both sides of the ball.