Previously bunk beds would generally come in typical sizes of twin over twin, without any chance for further modification; but now the market is full of bunk beds which are differently sized, styled and have additional features combined with it For example, if you have a big family, or if you need an extra space, you can sleep along with your kid on the bunk bed, then the ideal piece of furniture for you is the twin over full bunk beds or the full over full bunk beds