Park chairs in saltwater environments face unique challenges due to the corrosive nature of seawater. To ensure longevity, manufacturers use materials like marine-grade aluminum, stainless steel, or specially coated metals that resist rust and degradation. Powder coatings and galvanization further protect the frames, while UV-resistant finishes prevent sun damage. Additionally, designs often include drainage holes to prevent water accumulation. Regular maintenance, such as rinsing with fresh water, can also extend their lifespan. These features make park chairs durable and functional even in coastal areas.