This is the Royal treatment for manes and tails made from "Wheat Straw".What is Wheat Straw? It is a new innovative bio-plastic that is an eco-friendly alternative to petroleum based plastics. It is also a byproduct of harvesting wheat grain. The resulting natural plastic polymers are of benefit to the environment and farmers alike, creating zero waste and zero carbon emissions. Wow! Fine Grooming from Horse & Rider.