Element Discs Prototype 3 October 31, 2019 By Robert Wardle 0 Rate this post The Prototype 3 is the perfect choice for longer upshots and approaches. This flat topped overstable disc has a convex wing, that gives it the perfect grip for an easy release on both forehand and backhand throws. Buy A Prototype 3 Here Post navigation Previous PostPrevious Element Discs LithiumNext PostNext Thought Space Athletics Mantra