Yeowww! Catnip toys are definietly a favorite with our employees and customers! Yeowww! Catnip products are made of durable cotton twill and filled with special 100% organically grown catnip – no fillers and no chemicals. It’s a combination sure to keep cats of all ages entertained for hours!The Yeowww! Rainbow is stuffed 100% with organic catnip and measures 6" long.