[【Material safety】 Made of high quality wood naturally dried durable and safe.This wooden house Need your own installationEasy to install can also be removed manually.easy to clean and store they will get used to and like this toy. 【Multi functional Amusement Park】Double-decker design playground where your pet can sleep play hide exercise. "【MEET OUR PETS NATURAL INSTINCTS】Provides a fun playground and various climbing opportunities. which satisfies their playing instinct and helps reduce their loneliness and boredom." 【Him healthier】With ladder climbing allows your beloved hamster to do more exercise and keep him healthier. 【WIDELY APPLICATION】Large house size: 6.1 (L) x7.9 (W) x8.3 (H) inches cabin size: 6.3 (L) x4.1 (W) x5.1 (H) inches middle ladder size: 6.7 (L) x2.4 (W) inches for guinea pigs hamsters gerbils other small pets.]