The Stud disc by Innova Discs was PDGA Approved on 1-20-2016.

"The Stud is the Studly brother of the Colt but with some added stability. This means the Stud will handle the wind better and hold flight characteristics longer. The Stud is equally at home driving, approaching or putting in windy or calm conditions. Preliminary flight numbers are 3, 3, 0, 2." - by Innova Discs