Mid Sleeper Beds A mid-sleeper's mattress is similar to the high sleeper, however it's lower and usually has shorter ladders. These beds are great for small children or rooms with limited space. Mid-sleepers are equipped with a range of design options including shelves, desks or even tents. Check the product https://www.bunkbedsstore.uk/products/white-single-julian-bowen-neptune-bunk-bed