James Wellbeloved Hairball Formula is ideal for adult cats that are prone to hairball problems. Hairballs are formed when hair swallowed by your cat during grooming accumulates in the stomach and can't pass on to the next part of the digestive system. Because your cat can't get rid of the hair in the normal way, he or she has to vomit it out. Our Hairball formula contains 6% of natural insoluble pea fibre, which can trap swallowed hair and carry it all the way through the digestive tract and into the faeces, thus greatly reducing the incidence of vomited hairballs. Of course, this food also has everything you would expect from a James Wellbeloved cat food, including omega fatty acids for glossy coat and a natural prebiotic.