And when your kids want their own rooms, you can detach the top bunk and make it into a standalone twin XL bed. This bunk bed is also great for large families with limited space since the bottom ...

Twin Loft Bed. This bunk bed has it all with a sleeping space up top, a desk for working, and a wardrobe for storage. There are three colors for this wooden bed: espresso, gray, and white.

Bunk beds offer extra sleep space for grown-ups. The versatility of their design allows them to be used for multiple purposes. "In some cases we make them for adults.

The bottom bunk is queen-size, while the top is an extra-long twin. “We thought it would feel too overbearing to make both beds queens,” Zwickl says. Photo: Diana Relth ...

Twin mattresses are the most common size for bunks, but can feel cramped for some adults. If there’s space, a twin XL mattress, which is five inches longer, is often a better choice than an ...

Twin XL (extra-long) mattresses are the same width as traditional twin models but offer extra length. This makes them a good choice for adults and a popular choice for guest and dorm rooms.

Best for: Bunk beds, daybeds, kids and small rooms Most bunk beds and daybeds, both loved for how they creatively utilize space in a room, are designed to fit twin-size mattresses.