The Missilen disc from Latitude 64° was PDGA Approved on 5-22-2014.

"Missilen (The Missile, in Swedish) is a project that Latitude 64° has been working on for a while. It features hexagon shaped cavities in the surface of both the top of the disc and the bottom of the rim. This pattern has been tested to be the most efficient in reducing drag. The shape of Missilen combined with the Opto Hex surface design makes for a disc that is unmatched in speed at the end of the flight." - by Latitude 64°