BLADE _ PRO ultra light The Blade Pro is a result of working with Philip Koster to refine an already incredible sail. The 5 batten layout combined with the HyperSpider tech controls any draft movement and extends the functional wind range over a standard sail. Ultralight with precision control. The Blade Pro is the premium version of the legendary Blade. Utilising 5 battens for maximum control, stability and wind-range, this is Philip Koster’s weapon of choice.