As we know, are Neophobiker cat, it took me all the more surprised that my cat is walking around after less than 10 minutes in, and the same evening lay in! Meanwhile they (unfortunately no longer in my bed) sleeping every night in the cubicle and spends every free minute in it otherwise: D Although 40 cm diameter may sound quite large in the first moment, but my cat 2.5kg just fits in perfectly. So should all those whose Schmusetiger is getwas obese, buy a bigger cubicle. The metal ring seems very stable and does not bend at all. The installation was simple; just pick a spot on the scratching post, consisting of screwed-together elements that set and ready cubicle in between! Highly recommended!