Give your parrot more to do with colorful shred to play with first!. They are made of 5-6 oz leather in addition to our Regular Pockets and Tasseled Pockets. Fill Parrot Pockets® with your birds dry pelleted diet or any other dry good idea for longer occupational time while you work! The diameter of the holes are made for diets like Harrisons Bird Food Macaw pellets or ZuPreem macaw sized pellets. This pocket size is intended for larger parrot species such as large macaws or cockatoos at 6" wide by 9" tall.