The sizes (small, medium and large) refer only to the outer earpieces that fit in the ear's concha bowl and help hold the EP3 in place. Proper EP3 size is based on the dimensions of your ear's concha bowl. Medium fits most people.
Sold in single left/right sets or in a box of 25 sets. Each set is packaged in a convenient carrying case.
Special discounts may apply for high volume sales.
Contact our Bids & Quotes department for more information.
Check the other one. I would bet they are medium. They should both have an "M". One should have an "R" for right and the other should have an "L" for left.