● House shape very attractive to children● Serves as a private space for kids when it is covered with a tent (not included)● Dual bed design suitable for friends to sleep over● Recommended 6" mattress thickness for upper bed and < 6" for trundle● PV casters enables you to pull trundle out smoothly● Plywood slats to reduce the squeaking sound cased by turning over● Solid wood structure for excellent firmness and load capacity● No need for an extra box spring● Assembly is a piece of cake and very quick