Bison Botanics’ 99% CBD isolate oils are made from top quality New York State CBD isolate. The CBD isolate extract contains greater than 99% CBD. The 500mg and 1000mg CBD isolate oils are packaged in a 20ml bottle while the 2000mg and 3000mg CBD isolate oils are packaged in a 35ml bottle. All of our bottles contain droppers with markings on them that will allow for easy portion control. If you have any questions about the difference between CBD isolate oils and full spectrum CBD oils feel free to reach out to us.