high safety nets made of metal poles and nets on rugby field, football athletic stadium. spectators sit close by and they are prot

are athletic auditorium badminton ball balls barrier barriers basket basketball blue catching children close construction empty field floorball flying football forest function galvanized games garden gate green grid ground guardrails gymnastics high lines made mesh metal multifunctional net nets objects outdoor pillar play playground pole poles prot protected protection rugby safety school sit sky spectators sports stadium stainless steel stop they tribune yard yellow