The adorable Meiya & Alvin Squeaker toys from the book, "A Day at the Park with Meiya & Alvin" has an all natural cotton body. Each squeaker toy combines the developmental benefit and stimulation of sound toys with a friendly natural rubber character head, sustainably harvested from the Hevea tree, that is ideal for teething . Meiya and Alvin are in a form that is easy to grip for little hands. Sound Toys, like squeakers, provide stimulation to babies as they discover their senses. Meiya and Alvin are the winners of the Dr. Toy Best Green Award for 2015.