LOVE this realistic frog! The expansion pack is great! Greatly compliments the Poison Dart Frog, making an even more unique frog! The inflated vocal sac is detailed and worked right into the crochet! The pattern is full of all the tips and hints you need to create this guy, referring back to the Poison Dart Frog(that you need to complete him- which is loaded with even more pics) when necessary. HIGHLY RECOMMEND! Thanks June!