AeroJet Volition Limited Edition Stiff 9 The Palm Tree Crew limited edition driver represents a collaboration between Cobra, Rickie Fowler and renowned DJ, Kygo. AeroJet combines a super-fast aerodynamic head shape with extreme forgiveness for high-flying performance. An innovative PWR-Bridge weight structure produces unmatched flexibility in the face and sole, pushing the CG lower and forward for faster ball speeds. The carbon fiber crown and sole create a lighter, yet stronger chassis for added stability and power. A forged PWRShell face insert brings maximum flex for optimal launch and speed. H.O.T face design is crafted through artificial intelligence for a variable thickness pattern that delivers efficient speed and spin across the face.