The cereal part fits perfectly into a wide-mouth pint sized mason jar to easily transport to work. It's about a 1/4 cup each Grapenuts, Uncle Sam's Cereal**, bite-sized Shreadded Wheat, and rolled oats. The ground flax seeds, and raisins also fit in.
The grapefruit is kinda weird, but has the tangy tartness and sweetness similar to a strawberry, so I guess isn't that odd.
It's definitely a big bowl. I'm having trouble finishing it.
*I forgot to pick up the grapefruit, but figured I'd try it out without it because grapefruit on cereal sounds weird anyway. When I got to work, there was a grapefruit on my desk. I still haven't figured out who gave it to me, but apparently the Universe provides.
**I'd never heard of Uncle Sam's Cereal, but I found it in the natrual food section of the normal grocery store.