Many cats like a low - sided wall around their perching platforms, for a feeling of
extra snugness and confidence that they won't fall off.
I like the relative lack of girth;
the extra snugness, which can be a little opressive - claustrophobic even - when you're just puttering around, makes a lot of sense when you're getting it on in the 1.
Some blazers come with an inseam, and that sometimes give
the extra snugness you may or may not want.