Eco - friendly disposable plastic cups are designed with environmental considerations in mind. These cups are often made from materials like PLA (polylactic acid), which is derived from renewable resources such as corn starch or sugarcane bagasse. Unlike traditional plastics, PLA - based cups are biodegradable or compostable, reducing their environmental impact. Some manufacturers also use recycled plastic content in their cups, further promoting sustainability. These eco - friendly cups are used in cafes, restaurants, and events where environmental awareness is high. They function just like regular disposable plastic cups, holding hot or cold beverages, but with the added benefit of being a more sustainable choice. However, it's important to note that proper disposal in composting facilities is required for biodegradable cups to break down effectively.