A "cooler" is a portable container designed to keep food and beverages cold. It is commonly used for picnics, camping trips, and outdoor events. Coolers are typically insulated to maintain low temperatures and can be filled with ice or ice packs to enhance their cooling capabilities. They come in various sizes and materials, ranging from soft-sided bags to hard plastic boxes. Many coolers also feature additional elements like built-in handles for easy transport, drainage plugs for removing melted ice, and compartments for organizing items. Some advanced models even include wheels for easier mobility and can be used for both cold and hot items, making them versatile for different occasions.