My daughter is 4.5 and for the last 2 years has slept in a bed without sides that's very low to the floor, so she wouldn't hurt herself if she fell out. We're just about to move her to a proper single bed - do you think I need a bed guard for her? It seems odd to have a bed guard at almost 5 years old, but the new bed looks so high in comparison to her old one! I suppose all kids are different sleepers but do other people use bed guards at this age?