This high-visibility underwater marker buoy offers a robust solution for visibility in the water. Featuring a PVC inner chamber and a reinforced nylon outer covering, this buoy is resistant to abrasion and marine stress. Two flags, one alpha and one red with a white stripe, increase visibility and safety. The sewn-in Cordura strap with a loop allows for attaching the line and other items. A 25-meter-long 6mm floating line is included. With a diameter of 360mm and a height of 500mm above the water, this buoy is easily visible even in rough seas.