Country flag in mainsail.
When purchasing a country flag, you order one set. So you can place the country flag on each side of the mainsail. For the best application of the country flag, clean the surface first before adding the stickers on the mainsail.
Please note, these are NOT allowed for the Nacra 17. You can purchase the Nacra 17 flag here: https://porttackracing.com/products/nacra-17-sail-flag