The extendable buoy (1.90 m – 3.60 m) made of fibreglass can be locked with just a quarter turn, the integrated counterweight ensures an upright position in the water. The cylindrical buoyancy body made of soft PVC lets the buoy protrude 2.30 m out of the water and the yellow/red signal flag (45 x 35 cm) is visible from far away. It also features a 3m long floatable line in order to connect another rescue device like a lifebuoy. The flag can be rolled up and secured with a clip when the buoy is not in use.