surefire earpro sizing

[hnoppenberger]

i want to get some of these heard good things, but im not sure if i need version 3 or 4 (4 for bigger canals) and then each one comes in a different size

any suggestions? its not like i can try them on....

[fathead]

when you call surefire, ask the phone rep to help you with the sizing...worked for me