There was a range of Digimon reversible plushies which were Koromon and Agumon, Tsunomon and Gabumon, Motimon and Tentomon, Bukamon and Gomamon, Tanemon & Palmon, Yokomon and Biyomon and lastly Tokomon and Patomon.
They do appear online quite often so the best places to check are eBay. They are made by Play by Play.