These models are not a recognized competitive class, but are a lot of fun to build and fly. They are stick and tissue models with a seventeen to twenty-four inch wing span that can have multiple rubber motors. They are usually flown indoors in a type of contest called "2, 3, or 4 Off The Floor", but can be spectacular fliers flown outdoors under zero wind conditions.
The video below is an example of a Giant No-Cal in flight.