A thickened, widened base under 60 in of plywood frame is what stops a tall cat tree walking across the floor when two cats use it at once, and anti-slip pads protect the boards underneath. Rounded corners are cut into the platforms for safety. Two condos sit at different heights with a 15-in perch above and a 14-in basket alongside, each layer rated to 33 lbs. Bamboo and engineered board fill out the structure at 36 lbs. Sisal posts and plush surfaces finish it; a user manual is supplied.