The Prevue Hendryx 1095 Nature’s Hideaway Grass Ball Toy is a hand-woven grass activity center that provides hours of fun for your small pet. The toy is made of 100% all natural black grass and is ideal for a guinea pig or ferret. The toy has a diameter of 9 inches and is hand-woven with durable twine. The toy is perfect for satisfying natural instincts to burrow, explore, and nest.