Base faulty...almost killed my kittens!
My new 10 week old kitten and 5 month old kitten launched at the pole and the 3cm hole gave way and the top just toppled away from the base. the kittens went flying. Fortunately they fell forward with the pole, if one had been on the other side he would have got squashed.
The base is made of chipboard, and the board had just crumbled and shattered on the top, under the covering...you can feel large lumps under the fur. Underneath is not so bad. Very POOR QUALITY, or faulty. BE WARNED, DANGEROUS