Our 11? Deltas are fantastic flyers. Framed with sturdy fiberglass and carbon rods, these gigantic sails launch smoothly and gain altitude gracefully. The delta design naturally adapts to a wide range of wind conditions making it especially easy to fly.65x130in. (5-20 mph) Carbon and Fiberglass Frame. Ripstop Nylon. 150lb. Test line recommended. Includes case.