A double bed, also known as a full-size bed, is a type of bed that is designed to comfortably accommodate two people. It is larger than a twin or single bed but smaller than a queen or king-size bed. The typical dimensions of a double bed can vary by region, but a standard double bed in the United States is approximately 54 inches (137 cm) wide and 75 inches (191 cm) long.

Double beds are a popular choice for couples who want a balance between space and room size. They provide enough sleeping space for two adults but are more space-efficient than larger bed sizes. Double beds are commonly used in bedrooms, guest rooms, and smaller living spaces where a larger bed might be impractical.

These beds come in various styles, materials, and designs to suit different preferences and room aesthetics. Additionally, double beds often require a double mattress, which is specifically designed to fit the dimensions of the bed frame.

It's important to note that bed dimensions can vary by country and region, so it's always a good idea to check the specific measurements when purchasing a double bed to ensure it fits well in your space.