An object or place that's comfy is one that makes you feel relaxed and comfortable.
When people describe something as comfy, they usually mean it's so nice to be around that you just want to stay there. You might hear someone say their new couch is comfy, which means they love snuggling up on it with a good book or a nap. Or maybe your friend says the park bench is comfy, and you both decide to sit down and chat for a while. Even if something is old or worn out, as long as it feels cozy and supportive, people might call it comfy.
Comfortable.
Example: The robe and slippers were so warm and comfy she just fell asleep in her chair.
