Game spring for parks and gardens made with safe materials and long-lasting. The shape is the ealizzata entirely in polyethylene HD tinted in the mass, to high density and completely recyclable. The polyethylene is treated against the rays UV. The spring is steel, painted, tested, and certified. The hardware is in stainless steel and galvanized steel. The support for fixing to the ground: it is given by a robust frame in stainless steel then galvanized.