Specification:ColorBlue/PinkMaterialEcologic BoardSize15cmx17cmx10cm/5.9inx6.7inx3.9inFeatures:1.Eco board is a wood based green material.2.High strength, high hardness, no cracking, no moth eaten, waterproof, anti-aging without any toxic substances.3.Hamster houses and staircases are easy to assemb..