The Sling is a stable straight flying Mid-Range disc. It was one the disc used for the 2016 Trilogy Challenge for everyone. Sling-shots shooting rocks take no effort, just like throwing the Sling. It's smooth flight can be thrown at any angle with excellent results. This is a perfect all-purpose disc for any skill level since any line thrown, it will hold exceptionally well. The Slingwas chosen for the Trilogy Challenge in 2016 due to it's excellent flying ability. If you don't already have one, they are the perfect addition to anyone's bag.