These cats crawled into slippers and fell asleep like that.
These two cats are sleeping with their heads stuck into leopard slippers. They look like as if they were wearing leopard-print hat.
Maetel! (ed.: a character who wears a Cossack hat in an anime, Galaxy Express 999)
They look so adorable!
Those slippers are undoubtedly warm. No wonder those cats liked them. If you have a cat at home, you might want to give it fury slippers as presents.