The Superdisc Ultra's 12 inch (30cm) diameter and proprietary spoiler rim produce exceptionally long, stable flights while its rubber edge provides a secure grip for soft catches. The long, accurate flights of the Superdisc Ultra are made possible by its advanced aerodynamic design which incorporates a proprietary spoiler rim with a rubber edge for soft catches. The original Superdisc became a favorite shortly after its debut because players of all skill levels could throw it well and enjoy its stable, accurate flights. Read more… The Superdisc Ultra was developed in response to Superdisc fans clamoring for a larger, heavier version. The Superdisc Ultra’s rubber edge provides a great grip for strong throws. It also feels soft to catch and does not develop sharp scratches and burrs like a conventional hard plastic flying disc when it hits pavement and other hard objects. Available in yellow, red, blue, and green.