I bought these a few times and they come in a variety of sizes all in the same bag. They are all 12" long. Some are thin like a pencil, some are thick like a thumb and the rest are somewhere in between. Anyone who complains about the size should look at the price of bully sticks in a pet store. You can get this whole bag for less than the cost of 2 long sticks elsewhere. The thick ones last my large dog a half hour or more. He actually seems to like the thin ones better. He's getting old. Maybe he doesn't want to work so hard on his treats anymore.