Covering system (21) comprises a covering unit (22) reinforced in the edge region (22a). Preferred Features: The longitudinal sides of the covering unit are reinforced. The covering unit is 1.0-1.5 m, especially 1.2 or 1.3 m wide. The covering unit has a weight of 250 g/m2> and is UV resistant, water-tight and washable. The covering system is provided with an elastic holder (23).