Low Loft Bed for Kids / Toddlers: Not like other high loft bed, this loft bed is low height design allows easy and safe access to this bed for little kids.and easy bedding exchange for parents. Twin Loft Bed with Storage Space Underneath: 28.7 inch high under-bed clearance, you can put your dresser underneath to use your floor space twice, or you can build a fort for you kid,makes small kids room full of joy. Safe Twin Loft: 11.9 inch high safety rails surround the twin loft in all directions,keeps your boys or girls have a safe and sweet dream all night long.recommend 6 inch (or thinner) mattress.