It's better to use a 6-inch bowl for instant noodles because a 6-inch bowl can keep the instant noodles warmer better and you can put the instant noodles in a fuller bowl, in addition to the 6-inch instant noodle bowls are smaller overall and easier to hold.

The instant noodle bowl is a bowl used to soak instant noodles or to hold pasta, usually made of ceramic or stainless steel, etc. It is fresh, non-toxic and durable, and usually has a handle and a lid.