Reusable cups are designed to be used multiple times, reducing the need for single-use plastic or paper cups. They are often made from materials like stainless steel, glass, or BPA-free plastic, making them durable and environmentally friendly. Many people use reusable cups for coffee, tea, or other beverages, helping to minimize waste and promote sustainability. These cups can also be customized with various designs and sizes, appealing to different preferences. Some reusable cups come with features like insulated walls to keep drinks hot or cold for longer periods. By choosing reusable cups, individuals contribute to reducing litter and conserving resources.