Choosing the right bed size is crucial for comfort, sleep quality, and overall wellbeing. This comprehensive guide walks you through the various mattress dimensions, including twin, full, queen, king, and California king, helping you make informed decisions based on your space and sleeping habits. Understand the unique advantages of each size, explore options for small rooms, and discover how bed frames fit with different mattress sizes. Whether you're furnishing a cozy apartment or a spacious master bedroom, this guide is your ultimate resource for selecting the ideal mattress.