FNF Jumbo Chewing Gum is a synthetic material designed primarily for worm patterns, however, it has many different uses, for example, shrimp bodies.FNF has taken the already very successful Chewing Gum and beefed it up to grab the attention in the water.Jumbo Chewing Gum has a micro core making it easy to tie with; it is also a strong, resilient material.This product is not made through an extruded process making it legal for certain competitions.