​Fat Red Dog is an innovative line of solid bio-composite fishing sinkers engineered by Invented South Africa LLC to provide a 100% water-soluble alternative to traditional lead and synthetic tackle. Designed to meet expanding environmental compliance standards, the product leaves zero toxic residue or microplastics in aquatic environments and conforms strictly to established lead testing and "Generally Recognized as Safe" (GRAS) requirements. The sinkers break down gradually over a period of time, with a dissolution rate that dynamically adapts to local water temperatures and movement. If removed from the water early and stored in a shaded area, they undergo a unique hardening process that helps restore their structural integrity for future use. Because they are safe and clean to handle, these versatile weights are an excellent choice for standard setups as well as families, children, and lighter fishing rods.​