http://surfgalerie.oase.com/data/724/Slingshot_Turbine_2017_all_sizes.jpg 15,17,19 is the same as last year, middle bar pressure, fat leading edge, huge lowend, sitting in window > good for unhooked not so good for upwind. easy water relaunch, wenn you fligh the kite higher in the air 11:00 you can...