Pop-up-Sweetcorn is a buoyant rubber imitation grain of corn. It is soft enough to be used on the hook if desired, but is best when used on a hair rig along with real grains of corn, of a corresponding colour. Individual grains vary slightly in buoyancy, to allow a bait to be either critically balanced or popped up, depending upon the size and quantity of grains used. As a guide, 1 grain will just pop up 2 real grains of corn on a size 10 specimen type hook.
The Enterprise Tackle Pop Up Sweetcorn Red is the product you didn't think you need, but once you have it, something you won't want to live without.