The Sling disc from Westside Discs (http://www.westside.fi/) was PDGA Approved on 2-25-2016.

"The Westside Tournament*Sling is a new midrange disc for the 2016 Trilogy Challenge player pack. The flight ratings for*Sling are 5 5 0 1." - by Westside Discs (http://www.westside.fi/)

http://discussion.pdga.com/files/u1370/westside_sling.jpg

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More... (http://www.pdga.com/announcements/cant-win-thing-if-you-aint-got-sling)