As your child grows into a young adult they will need extra space. Here are a selection of the finest 'High' beds. Some are single height designs. Some, known as system beds, can be 'jacked up' by adding height kits. if you have already purchaed a system bed, now may be the time to raise it to its full height to give room for serious study, storage and a layout to accommodate their friends staying or 'hanging out'.