The core bed i bought is made of stainless steel, and what i am most satisfied with is saving space. My study area is not large, only about 8 ㎡ , but this core bed is 1.2 meters folding design, which can be stored on the wall when not in use, occupying no space at all, and it is a professional training bed after unfolding, which is very convenient. It seems that my cat prefers it