Structure good but beds are unsafe & thin… useless!
The beds become misshapen quickly & wear out. They cannot be purchased as spares so I had no choice but to spend over £32 to buy two wooden shelves from Zooplus which use identical beds . The shelves were thrown away & within 10 months the beds were worn out again. Re safety,the beds are only attached to the shelves with a few strips of Velcro & my cat fell from the top shelf when the bed came away. They look good but I will not buy again unless Zooplus start offering spare parts & extra Velcr