Vidagoods 72" Big Fat Cat Tree Solid Condo Furniture Scratch Post Play House CARB2-Certified Wood Particle-board Board Material : CARB2-Certified Particleboard Wood (The highest standard) Covering Material : Faux Fur Top Perch: Solid Condo. 5 Posts covered by Faux Fur,5 Posts covered by natural sisal rope. Post diameter: 9cm, According to the demand of the cat, we modified the design, the diameter of the pillars were increased from 6 cm to 9 cm. MORE STABLE