Easy to assemble. Cardboard toys specifically for hamsters. Hamster's Mischief Land ・Assembly Dimensions 【Slide】W80 x H80 x D155mm (Entrance size: 45 x 50mm) 【Seesaw】W45 x H60 (at the highest point) x D45mm ・These toys are made of cardboard specifically for hamsters, with a focus on both appearance and play style. ・After having fun playing, it can also be used as a cozy bed. ・Set it up in the cage to create an exciting and fun hamster land. Made in Japan