Gradino step is the helper piece, a woven platform that gives a cat a foothold on the way up to a windowsill, a shelf, or a higher perch. The handwoven body adds a bit of grip and warmth underfoot, and the anthracite finish keeps it low key against a wall.Use one on its own as a boost, or stack a route of them with the gradino nest for cats that like to work their way up in stages.