• 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