To addresses in Japan:
Rectangular postcards of [14.0 to 15.4] by [9.0 to 10.7] cm [L x W]
To addresses overseas:
Rectangular postcards of [14.0 to 23.5] by [9.0 to 12.0] cm [L x W]
: For security reasons, no other type of mail can be accepted. Picture postcards purchased at duty-free shops in the departure area cannot be accepted.