DESIGNED IN PARTNERSHIP WITH JJ RIVET AND USED BY PLAYERS ON THE PGA TOUR. Jean Jacques Rivet, a former competitive athlete and engineer, is a globally recognised pioneer in the field of sports biomechanics. With over two decades of experience and a foundation in scientific methodology, J.J. has established himself as a leading expert, making a significant impact on the PGA Tour. The insole provides protection against pressure on the first metatarsal (M1) head during the swing. Rear and mid foot reinforcements provide optimum biomechanical guidance throughout the swing. TECHNICAL FEATURES: Top cover: Conforteva MP 2.5 mm | Grey Resin base: Podiaflex® 1.2 mm | Black Forefoot (M1 pad): Viscotène® 2 mm | Grey Heel Pad: Noene® 2 mm Midfoot reinforcement: Transflux® 1 mm | Black Additional reinforcement: Transflux® 1 mm | Blue